Analogous structures accomplish the same function. However, they have different embryological origin, the elements composing them are different, and individuals carrying them are not closely related. ANALOGY.
What are homologous and analogous structure?
Homologous characters are structures that have
The same basic elements. Their position in the body and the relations with adjacent structures are also the same in different organisms.They share the same embryological development.These structures might show variations between the organisms exhibiting them. Variations might be related to their function and the environment in which the organism lives. Their function is not necessarily the same in all the organisms involved.
These homologous characters are present in organisms related that share a common ancestor.
Analogous structures are those body parts of different organisms that accomplish the same function, but they are originated from different areas.
These structures do not share the same embryological origin.
According to this information, an owl's wing and a hornet's wing are analogous structures.
These species do not share a common ancestor.The structure and elements composing the wings are very different.The embryological origin of these structures is different.Both of them have the same function.This example respresents ANALOGY.
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select all that apply identify the cell activities that are regulated by cellular control systems. (check all that apply.) multiple select question. breakdown of proteins temperature regulation maintenance of blood pressure energy production
The cell activities that are regulated by cellular control systems include the following below:
A. Energy production
C. Breakdown of proteins
What is Cellular control system?This system is responsible for the different processes which occurs in the cell cycle of organisms and employs the use of different types of compounds.
Energy production is regulated in cells through ATP which is the energy currency and undergoes phosphorylation to release it while in the case of protein, enzymes control it and ensures that the folds are accurate and prevent misfolding or denaturation thereby making option A and C as the most appropriate choice.
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The options are:
A. Energy production
B. Temperature regulation
C. Breakdown of proteins
D. Maintenance of blood pressure
Total flight height can be considered to be a measure of the total energy required to break open a whelk. Why is this value lower for a platform set at 5 meters than for one at 2 or 15 meters?
The value of the overall flight height is obtained by multiplying the average drops to break open whelks and height by one another.
Due to the increased number of flights necessary to break the whelk, the energy needed at lesser heights, like two metres, will be higher.
What kind of link do you think exists between total flight height and drop height?At the lowest and highest drop heights, total flight height is greater than at the mid-range drop heights. The amount of energy needed to open a whelk may be calculated from total flight height.
The pilot may adjust the yaw, pitch, and roll of the aircraft by using levers and buttons.
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In the nitrogen cycle, different forms of nitrogen move through all of earth’s subsystems. which step in the nitrogen cycle shows how nitrogen moves from the atmosphere to the geosphere?
The process of nitrification in nitrogen cycle in which the nitrogen-fixing bacteria convert inert nitrogen in the atmosphere to nitrates in the soil.
The nitrogen cycle is a biogeochemical process through which inert nitrogen is converted into more usable forms such as nitrites and nitrates. Nitrogen in the atmosphere is converted to various forms to maintain a balance in the ecosystem. It involves five main steps through which atmospheric nitrogen is first moved to the geoshpere and then back to the atmosphere. The five main steps are: nitrogen fixation, nitrification, assimilation, ammonification and dentrification.
The nitrogen cycle is important for plants to absorb an essential nutrient for their growth. Nitrogen cannot be taken up by plants from the atmosphere. Therefore, nitrogen needs to be present in the soil so that the plants can consume it through roots.
Inert nitrogen present in the atmosphere is converted into nitrates in the soil (in the geosphere) through symbiotic bacteria such as Nitrosomonas bacteria. Nitrates are absorbed by plants and are delivered back to the atmosphere through dentrification.
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suppose that, from measurements in a microscope, you determine that a certain bacterium covers an area of 1.50μm2 . convert this to square meters.
The answer is 1.50*10^-12 m^2 measurements in a microscope that determine a certain bacterium covers an area of 1.50μm2
divide the area value by 1e+12
Once both measurements are converted into meter, multiply them together to get the measurement of the area in square meter.
What does the term bacteria mean?Any of a vast group of one-celled organisms that reproduce via fission or spore formation, and in certain circumstances cause illness. They are the most abundant lifeforms on Earth, and they may be found in all living organisms and all settings.
Bacteria may be found in all habitats on Earth, including soil, rock, seas, and even polar snow. Some creatures live in or on other species, such as plants and animals, including humans. Bacterial cells outnumber human cells in the human body by a factor of ten.
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Carlo is wondering what causes plants to grow at different rates. Carlo’s hypothesis is “Plants will grow more when the day is longer.” To test his hypothesis, Carlo sets up an investigation that includes an experimental and control group. What factor would remain constant in the control group?
Exposure to sunlight is the factor that would remain constant in the control group.
There is an experimental group and a control group in every scientific investigation. To eliminate any error in results caused by factors other than the variable factor, a control group is included. The experimental group is the one that has been exposed to the variable factor at various levels.
Here, Carlo seeks to ascertain how the length of the day affects plant development. The length of sunshine is hence the test variable in this situation. This time period will be altered in the experimental group to assess its impact. It will remain the same in the control group so that the effects of other things can't affect the observed experimental result.
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You have a patient who is lethargic (really sleepy, lacking energy),
though they have gotten plenty of sleep and eaten full meals throughout the day. What organelle is likely the dysfunctional culprit?
Lysosome
Mitochondria
Nucleus
Vacuole
According to the research, the correct option is Mitochondria. If a patient is lethargic (really sleepy, lacking energy), probably Mitochondria is likely the dysfunctional culprit organelle.
What is Mitochondria?It is a cellular organelle that provides the energy necessary to carry out cellular activity from the synthesis of ATP by oxidizing metabolites through oxidative phosphorylation, generating a very high percentage of the energy produced by the cell.
In this sense, it provides chemical fuel to the various cellular processes necessary for life (cellular respiration), a defect in it would attract lacking energy.
Therefore, we can conclude that according to the research, the correct option is Mitochondria. If a patient is lethargic (really sleepy, lacking energy), probably Mitochondria is likely the dysfunctional culprit organelle.
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When using your arms to lower yourself into a chair, you bend your arms without using your biceps. Explain how this is possible. (Hint: Think about gravity as an antagonistic force.)
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What is the first digestive enzyme introduced in the process of digestion that targets the breakdown of starch?
Carbohydras the first digestive enzyme introduced in the process of digestion that targets the breakdown of starch
What is the first digestive enzyme presented in the process of digestion that targets?Amylase is accountable for the breaking of the bonds in starches, polysaccharides, and complicated carbohydrates into easier-to-absorb simple sugars. Salivary amylase is the first step in the chemical digestion of foodstuffs
What are the enzymes accountable for digestion?
There are three major types of digestive enzymes: Proteases: Crackdown protein into small peptides and amino acids. Lipases: Break down fat into three fatty acids plus a glycerol molecule. Amylases: Break down carbs like starch into straightforward sugars.
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Given the latitudinal differences in sunlight intensity (see Figure 52.3 ), how might you expect the carrying capacity of plant species found at the equator to compare with that of plant species found at high latitudes?
Considering all other factors to be equal, you would anticipate that a plant species will have a higher carrying capacity in the equator than at high latitudes due to the greater amount of incident sunlight there.
What is Species Diversity?Diversity is highest when all species are equally plentiful in the area. "Species diversity is defined as the number of different species present in an ecosystem and the relative abundance of each of those species. The three categories of biodiversity are as follows: Genetic Biodiversity. Animal diversity. Biodiversity in the environment.
Why is species diversity important ?Stability increases with biodiversity in ecosystems, species, and people. For instance, species with several populations that are adapted to a wide range of environments and significant genetic diversity are more likely to be able to withstand disturbances, illness, and climate change.
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Which situations would result in an ethical concern for a genetic counselor? select all of the statements that apply.
The genetic counselor raises the ethical concern of that is related to the privacy, safety, justice, equity and the genome editing research that involves embryos.
The information about and individuals, family history, risk of disease, genetic disorder need to be kept confidential. The genetic tests can provide the information about the person's medical future, that is related to their gene sequence that can causes family discord and psychological stress.
The genetic counselor provide the facility to the individual or family for a variety of genetic disorder, variety of inherited condition, that can be followed in the pedigree chart.
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Central chemoreceptors detect a decrease in ph in interstitial fluids in the brain. what is the response of the medulla to maintain delivery of oxygen to cells?
As a result of the feedback loop, sympathetic activity is indirectly increased, which causes vasoconstriction and a rise in blood pressure.
Cold temperatures typically cause the blood arteries that supply the skin to tighten or contract. Vasoconstriction, the result of this reaction, reduces blood flow to the skin, minimizing heat loss from the heated blood and maintaining a normal internal or "core" temperature.
Your body occasionally needs to undergo vasoconstriction, which involves tightening your blood vessels' muscles to reduce the volume inside. Vasoconstriction, for instance, keeps you warm when you're outside in the cold.
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answers are entered in the cells with gray backgrounds. cells with non-gray backgrounds are protected and cannot be edited.
The cells with gray backgrounds. cells with non-gray backgrounds are protected and cannot be edited by using LIFO Prepaid Cell Phones.
Non-gray background cells are locked and cannot be changed. An incorrect response will have a red asterisk (*) next to it or below it. a straight line approach Method of double-declining-balance: On July 1, 28, Razor Sharp Company paid $48,6 to purchase tool sharpening equipment. The equipment was predicted to have a three-year usable life and a $3, residual value.
Assuming that a perpetual inventory system is in operation, calculate the cost of goods sold for each sale using the LIFO approach, as well as the inventory balance following each sale, and present the information in the format shown in Exhibit 4.
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All of the following are a part of the current cell theory except
large organisms have fewer cells
all living things are made of cells
new cells are produced from old cells
the cell is the basic unit of living things
Answer:
All of the following are a part of the current cell theory except large organisms have fewer cells.
Hope this helps :)
Explanation:
The cell theory states all of the other three choices except for the first one, "large organisms have fewer cells."
Cell theory, first proposed in the mid-19th century, states that cells are the basic structural/organizational unit of all creatures and that all cells come from pre-existing cells. Therefore, option (A) is not part of cell theory.
What is cell theory?Matthias Schleiden and Theodor Schwann developed the Cell theory. In 1838, German botanist Matthias Schleiden found that all plants have cells. British zoologist Theodor Schwann discovered in 1839 that all animals are formed of cells.
The three tenets of the cell theory are as follows:
One or more cells make up the building blocks of every living organism.The fundamental, organizational and operational unit of all living things is called a cell.Every cell in the body originates from a pre-existing cell.Therefore, option (A) that large organisms have fewer cells is not a part of cell theory.
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viruses are capable of converting into a(n) choose one: a. virion, an intracellular replication complex, and an integrated part of the host genome. b. virion, a phage, and a plaque. c. phage, a plaque, and an oncogene. d. intracellular replication complex, a prophage, and a prion.
The virion, an intracellular replication complex, and an integrated part of the host genome.
The correct answer is A.
Describe the genome:All of an organism's genetic data is included in its genome. Nucleotide sequences from DNA make up its structure. The additional functional portions of the genome, along with any junk DNA that may be present, as well as protein-coding and non-coding genes, are all included in the nuclear genome.
How would you define a genomic example?The physical traits of an individual are an example of a genome. an organism's whole genetic makeup, including all of its genes and DNA sequences, is stored in its chromosomes.
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in layer 1, g cells secrete the hormone gastrin into nearby capillaries of the circulatory system. therefore, g cells should be considered exocrine cells.
In Layer 1, G cells secrete the hormone gastrin into nearby capillaries of the circulatory system. Therefore, G cells should be considered Endocrine cells.
Hormone- Chemicals called hormones function in the body as messenger molecules. They are created in one area of the body and then go to other areas where they assist regulate way cells and organs function. For instance, the pancreatic beta cells produce the hormone insulin.
Endocrine cells- The gut's endocrine cells are a significant source of the hormones that regulate metabolism, digestion, and hunger. They are mostly found in two places: islets in the pancreas and sporadic clusters in the mucosal epithelium of the gut.
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j.r. mcneill and william h. mcneill, the human web: a bird’s eye view of world history (norton, 2003)
J. R. McNeill and William H. McNeill the human web: a bird’s eye view of world history and a revealing framework of analysis.
Human webs are demonstrated by J. R. McNeill and William H. McNeill to be an essential element of world history and an insightful analytical framework. The McNeills give us a synthesising picture of the major trends in world history in a comprehensive, open-ended, and succinct explanation while avoiding any environmental or cultural determinism.These kinds of world-historical issues, which have been the focus of important books by Jared Diamond, David Landes, and others, are particularly important right now as international tensions rise. Two renowned historians, a father and son, explore the webs that have bound people together in patterns of interaction and exchange, collaboration and competition, since the beginning of time in a passionate and novel contribution to this accelerating conversation.To learn more about human web.
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According to the logistic growth equation {dN}/{dt} = rint N [ (K-N) / K ] a. the number of individuals added per unit time is greatest when N is close to zero. b. the per capita growth rate (r) increases as N approaches K . c. population growth is zero when N equals K . d. the population grows exponentially when K is small.
The correct option is (C) population growth is zero when N equals K.
According to the logistic growth equation, dN/dt =rN (K-N)/K, population growth is zero when N equals K.
What is exponential and logistic growth?When a population experiences exponential growth, the growth rate per capita (per person) remains constant regardless of population size, resulting in exponential population expansion.
In nature, populations may grow exponentially for a while, but ultimately, the availability of resources will limit their expansion.
As a population gets closer to the carrying capacity, a limit set by the environment's finite resources, the rate of per capita growth slows (K).
In contrast to logistic growth, which results in an S-shaped curve, exponential growth creates a J-shaped curve.
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baby sean has cystic fibrosis, which causes thick mucus secretions that can block ducts like the pancreatic duct, leading to insufficient enzymes in the small intestine. why are these enzymes important?
According to the research, If baby Sean has cystic fibrosis, the digestive enzymes secreted by the pancreas are not released into the intestine, so the baby will have difficulty absorbing fat, which is essential for the body.
What is cystic fibrosis?It is an autosomal recessive multisystemic disease, characterized by a chronic infection of the respiratory tract that leads to exocrine pancreatic insufficiency.
In this sense, it produces thick secretions that obstruct the ducts of the pancreas where digestive enzymes are responsible for digesting food in order to be absorbed and assimilated, cystic fibrosis causes damage to the lungs and pancreas which affects the digestive system and fat absorption.
Therefore, we can conclude that according to the research, If baby Sean has cystic fibrosis, the digestive enzymes secreted by the pancreas are not released into the intestine, so the baby will have difficulty absorbing fat, which is essential for the body.
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Joe wants to know if using a pencil eraser will erase better than the big pink handheld eraser. He decides to set up an experiment. He compares the normal pencil eraser to the handheld pink to see which will leave the most pencil residue.
What is the independent variable?
What is the dependent variable?
What should Joe control in this experiment?
A pink handheld eraser is an independent variable. The pencil eraser is the dependent variable. Pencil erasers should be controlled in this experiment.
An independent variable is one that you adjust, control, or modify in an experimental study to look at its consequences. Because it is unaffected by any other study variables, it is called "independent." Independent variables are also referred to as explanatory variables (they explain an event or outcome).
A dependent variable is one that changes as a result of an independent variable changing. The outcome you're trying to measure "depends" on your independent variable. In statistics, dependent variables are often referred to as response variables (they respond to a change in another variable).
Understanding variables is crucial since they serve as the fundamental building blocks of the data examined and evaluated in research projects. When doing descriptive research or interpreting the results of an experiment, researchers carefully examine and interpret the value(s) of each variable to understand how things relate to one another.
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What is the lowest level of organization to include both biotic and abiotic factors? a. organism b. ecosystem c. population d. biome please select the best answer from the choices provided a b c d
Ecosystem is the name given to the lowest level of structure that includes both biotic and abiotic elements. B is the right answer, thus.
The ecosystem is typically thought of as the lowest level of structure that includes nonliving (abiotic) elements. That would imply that abiotic influences are present in ecosystems, biomes, and the biosphere.
An ecosystem is a region where a bubble of life is created by plants, animals, and other species interacting with the weather, environment, and other factors. In ecosystems, biotic and abiotic factors—or nonliving components—coexist. Biotic factors include plants, animals, and other species.
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if a diet is low in fats, then proteins from the skeletal muscles will be broken down and used in place of carbohydrates to meet this need.
If a diet is low in fats, then proteins from the skeletal muscles will be broken down is false because it contain Ketogenesis
Ketogenesis happens within the liver. Ketones can be shaped from fatty acids when glucose is lacking including out of control diabetes or hunger. The coronary heart, mind, kidneys and skeletal muscle can adapt to using ketones as an electricity source.
Gluconeogenesis is the synthesis of glucose from non CHO assets which include glycerol and amino acids. it is the reversal of the glycolytic pathway and occurs with increased levels of glucagon and epinephrine.
Glycogenolysis is the breakdown of glycogen to glucose. it's far a catabolic system stimulated by glucagon and epinephrine.
Ketogenesis is while someone takes excess glucose then Insulin is released from the beta cells within the pancreas. it's far an anabolic hormone that promotes the conversion of glucose to glycogen in liver and muscle, uptake of glucose into cells, and promotes fat and protein synthesis.
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Dna double helices are soluble in water but insoluble in alcohol. How do these physical properties reflect the chemical structure of the dna molecule?.
The structure of DNA double helices are hydrophilic due to their highly charged phosphate groups and hence are soluble in water.
DNA is highly polar because of its highly charged phosphate backbone. Water is also polar and thus dissolves DNA following the principle " like dissolves like ''. The DNA is composed of N-bases, phosphate backbone, and pentose sugar. N-bases are hydrophobic but are on the inner side of the structure.
Whereas, phosphates are hydrophilic and are on the outer side of the structure. The presence of phosphates outside the DNA structure makes it water-soluble.
In addition to this, H in water is positively charged and phosphates in DNA are negatively charged. This enables DNA to get dissolved in water. On the other hand, alcohol, being polar, reduces the affinity of hydrogen bonds with DNA, thus making it insoluble in alcohol.
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How do stem cells from the bone marrow of an adult differ from embryonic stem cells (see Concept 20.3)?
Adult stem cells have little potential, however embryonic stem cells can develop into anything. Embryonic stem cells are also simple to cultivate. Embryonic stem cells, which can differentiate into any cell, make up embryos.
A stem cell is an unspecialized biological cell that may differentiate into several adult cell types and divide to produce more of the same type of cell, helping to regenerate and repair damaged tissue. They can be given by a young mother or a healthy adult.Bone marrow is the name for the soft material that fills the middle of the bones. There are many blood vessels in it. Red and yellow bone marrow make up both forms of human bone marrow. The bone marrow is where white blood cells and red blood cells are created.From embryos that are three to five days old, embryonic stem cells are produced. Embryonic stem cells are excellent for regenerating or restoring harmed tissue and organs due to their flexibility. Because they are only found in a few specific bodily regions, adult stem cells only occur in a few number of variations.Learn more about the stem cells with the help of the given link:
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The most common element in living organisms is
O Hydrogen
O Helium
O Oxygen
O Carbon
Answer:
Oxygen
Explanation:
Oxygen is right answer.
Many people regard the rapid population growth of less industrialized countries as our most serious environmental problem. Others think that the population growth in industrialized countries, though smaller, is actually a greater environmental threat. What problems result from population growth in (a) less industrialized countries and (b) industrialized nations? Which do you think is a greater threat, and why?
The increased air pollution results in many respiratory problems. They may face issues with day-to-day life due to a lack of resources such as vegetation and animal.
The uncontrolled exploitation of natural resources and excessive emission of CO2 is a greater threat. This has an impact on both developing and developed countries. The population growth adds to this problem.
Briefing:a) Problems resulting from population growth in developing countries:The exponential population growth leads to the rapid depletion of natural resources. The developing countries, due to lack of resources, have poor management of the garbage that blocks the water bodies and contaminates the water bodies such as the ocean. Eventually, they experience decreased access to clean water. The people in these countries are more prone to feel the impacts of this climate change. Due to global warming, the rise in sea level affects the population that lives in the coastal areas.
b)Problems resulting from population growth in the industrialized world:The United States is one of the most developed countries which is responsible for 25% of CO2 emission although it has the world’s only 5% population. The Industrialized countries are responsible for more carbon emissions. That results in global warming. The effects of this global warming affect both urbanized and developing countries.
The uncontrolled exploitation of natural resources and excessive emission of CO2 is a greater threat. This has an impact on both developing and developed countries. The population growth adds to this problem.
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Some disease-causing microbes attack the body by turning on or off specific signal transduction pathways. In the disease cholera, the bacterium vibrio cholerae causes massive diarrhea by interfering with such a pathway. A toxin from this bacterium enters intestinal cells and chemically modifies g proteins. Once modified, the g proteins can no longer cleave gtp into gdp. What would you expect to see within the intestinal cells of a person with cholera?.
The G proteins in the interstitial cells remain activated and continually activate adenylyl cyclase.
In order to react to environmental cues of any stress, such as the attachment of a pathogen, signal transduction pathways enable the binding of extracellular signaling molecules (like epinephrine) to the cells. As a defense against the disease-causing bacteria, the adrenal glands release adrenaline. These hormones stimulate a response by binding proteins such as G-proteins to receptors on the cell surface. This pathway is activated by disease-causing microorganisms in response to an attack.
Cholera in humans is brought on by the gram-negative bacterium Vibrio cholerae. Adenyl cyclase is stimulated by an active G-protein to produce cyclic AMP molecules. Chloride-ion channels are activated by cAMP by activating protein kinase A (PKA), which also inhibits sodium-hydrogen antiporters. This produces watery diarrhea by causing the loss of sodium chloride and water into the lumen of the digestive tract.
A straight forward columnar epithelium that is folded to create a variety of invaginations, or crypts, embedded in the connective tissue, lines the surface of the gastrointestinal system.
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Typically, the United States is referred to as having a mixed economy. Which two characteristics BEST illustrate the United States
acting as a command economy?
The two traits that mark United States as a Command Economy are;
Many commodities and services are controlled or largely controlled by the United States government, including education, courts, highways, hospital care, and mail delivery. Private persons, for example, cannot lawfully supply or acquire some sorts of items, such as cocaine, haggis, raw milk (in some areas), and the majority of flavored cigarettes. Other items receive high taxes in order to discourage their consumption.Also private enterprises in the United States must register with government authorities, and many professions, such as funeral attendants, auctioneers, private detectives, makeup artists, hairstylists, real estate agents, and financial advisers, can only function with government-approved licenses.
Hence in the above ways, the US government has elements of a Command Economy.
What are the advantages of a Command Economy?The benefits of a command economy include
low levels of inequality and unemployment, as well as the shared goal of replacing profit with equality as the major motivator for production.Command economies include disadvantages such as a lack of competition, which can lead to a lack of innovation and efficiency.
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There are vast stores of OFganic matter in the soils of northern coniferous forests and tundra around the world. Suggest an explanation for why scientists who study global warming are closely monitoring these stores (see Figure 55.15 ).
There are vast stores of organic matter in the soils of northern coniferous forests and tundra around the world. Suggest an explanation for scientists studying global warming are closely monitoring these stores higher temperatures lead to faster decomposition, and organic matter in these soils could be quickly decomposed to CO2, speeding up global warming.
The aid of manipulating the level of the factors of hobby, such as phosphorus availability or soil moisture, and measuring responses by number one producers. The strength glide is the quantity of power that actions along the meals chain. This energy float is also known as calorific waft.
The energy flows through the producers to the pinnacle purchaser and gets transferred to the nutrient cycle. thus, the power goes with the flow takes place in one-of-a-kind paperwork and not in a systemic cycle therefore the term power flow is used in preference to strength cycle. these include sun strength enter, temperature and moisture degrees carbon dioxide levels, nutrient availability, and community interactions.
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Polymers of nucleotides
O nucleic acids
O protein
O lipids
0carbohydrates
Answer: nucleic acids, the most common of them being DNA and RNA.
Complete this sentence. The melting point of a sample will ________ when the size of the sample increases.
Answer:
stays the same
Explanation: