Answer:
Anything that has space and occupies space
The answer is A - Anything that has mass and occupies space.
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The functions of alveolus are:
Large surface area for gaseous exchange to take place: c. Millions of alveoli present in each lung.Diffusion of gases though cell surfaces is facilitated: e. Alveoli and capillaries have a one cell thick wall.Distance for diffusion is kept short: e. Alveoli and capillaries have a one cell thick wall.Steep concentration gradient is constantly maintained: d. Each alveolus has a thin film of moisture.Quick access to circulatory system: a. Each alveolus is closely surrounded by a network of capillaries.What is the alveolus known for?The alveolus is well-known as the location of gas exchange in the lungs. Oxygen from the air diffuses into the bloodstream via the alveolar walls, whereas carbon dioxide from the circulation diffuses into the alveoli and is exhaled out of the body.
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How has the use of fossil fuels negatively affected Earth?
a. Less technology is available to people
b. More carbon dioxide has been emitted into the atmosphere
c. Average global temeratures have decreased
d. Recycling has become more common
b. More carbon dioxide has been emitted into the atmosphere is correct on how the use of fossil fuels negatively affect the earth.
What are fossil fuels?Fossil fuels encompass non-renewable energy sources that result from the remains of dead organisms which accumulate for millions of years on the planet's exterior. Electricity generation, heating households and establishments along with powering transportation depends on coal, oil, or natural gas extraction.
These fuels are formed by burying organic substances below sedimentary layers until they transform into fossil fuels through extreme temperature increases within Earth's mantle.
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Which of the following is considered to be a specific defense mechanism against infection?
A. skin
B. mucus in respiratory system
C. normal bacteria in intestine
D. stomach acids
E. antibodies produced by B-cells
Answer:
An Explanation:
What is one likely result of protecting environmental resources for future generations
Answer:
Our environment supports and houses our ecosystems, allowing them to grow and thrive. If we fail to protect our environment, we will put the lives of humans, animals, plants and more at risk.
Why is it important to preserve natural resources for future generations?
Conservation is the practice of caring for these resources so all living things can benefit from them now and in the future. All the things we need to survive, such as food, water, air, and shelter, come from natural resources. Some of these resources, like small plants, can be replaced quickly after they are used.
How do environmental problems affect the life of the future generation?
Children's immune systems are still developing, leaving their rapidly growing bodies more sensitive to disease and pollution. Extreme events can destroy homes, schools, childcare centers and infrastructure critical to children's well-being. Droughts and flooding can destroy crops and cut access to clean water.
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Answer:
One likely result of protecting environmental resources for future generations is that it will help mitigate the effects of climate change and preserve biodiversity. According to the web search results123, protecting environmental resources such as forests, wetlands, oceans, and soil can reduce greenhouse gas emissions, enhance carbon storage, prevent land degradation, conserve water resources, and support the survival of various species of plants and animals. This can benefit not only the future generations but also the current ones by improving their health, well-being, and livelihoods. Protecting environmental resources for future generations also requires sustainable use and management of natural resources, which can foster innovation, efficiency, and cooperation among different stakeholders
Explanation:
Which statement describes why genetic variation can be beneficial to a population?
Group of answer choices
1. to increase the chance that some offspring survive during times of environmental change
2. to decrease the number of disease-resistant individuals
3. to ensure phyenotypic diversity with potential mates for offspring with different physical appearances
4. to ensure that all offspring survive during times of environmental change
The statement to ensure phyenotypic diversity with potential mates for offspring with different physical appearances describes the genetic variation can be beneficial to a population.
A population's genetic variation is the variation in DNA sequences between individuals. Somatic (all other) cells as well as germ cells (sperm and eggs) are both subject to variation.
The variation in DNA between individuals or populations is known as genetic variation. Mutations and genetic recombination are two of the numerous sources of genetic variation. Genetic variation is primarily caused by mutations.
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Which of the following explains why nuclear energy is nonrenewable?
SEV3.a (MC)
Which of the following explains why nuclear energy is nonrenewable?
a There is a finite amount of hydrogen.
b There is a finite amount of uranium.
c Nuclear fusion can only happen seldomly
d Nuclear fission can only happen seldomly.
The nuclear energy is nonrenewable because b. There is a finite amount of uranium.
Nuclear energy is generated by nuclear reactions, either nuclear fission or nuclear fusion. Nuclear fission is the process where the nucleus of an atom is split into two smaller nuclei, releasing a large amount of energy. Nuclear fusion is the process where two atomic nuclei are combined to form a heavier nucleus, also releasing energy.
While the fuel for nuclear power plants is primarily uranium, which is abundant on Earth, it is still considered nonrenewable. This is because there is only a finite amount of uranium available on Earth, and once it is used up, it cannot be replaced. While there are efforts to extract uranium from seawater and other unconventional sources, it is still not considered a renewable resource.
The finite nature of uranium reserves is the main reason why nuclear energy is considered a nonrenewable source of energy.
Therefore, the correct option is b There is a finite amount of uranium.
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questions on phylum protozoa
We used different color to stain different chromosomes: orange for Christine X yellow for Christine y green for Christine 13 blue for chrose 18 and red for chromosome 21. Based on the slide analysis do you think that the baby would have any Christine abnormaity?
If the newborn possesses a pair of sex chromosomes, it would be able to identify the sex of the child based on the chromosomes' staining colors.
The child is thought to have one chromosome X and one chromosome Y, the sex chromosomes that determine male features, according to the colors used in the analysis. A person's sex is determined by a pair of chromosomes called the "sex chromosomes." In humans, males have one X and one Y chromosome (XY), while females have two X chromosomes (XX). Consequently, the baby would be male.
Therefore, the correct option is A.
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Given a total atmospheric pressure of 645 mmHg (high elevation): What is the partial pressure of oxygen in the alveoli (in mmHg )? Oxygen: 13.7%
Why do offspring usually look like their parents?
Their parents choose their features and make sure they look similar to themselves.
The offspring adapt to their surroundings making them look more like their parents
Offspring receive characteristics that have been passed down from their parents
Offspring dominant characteristics that have been passed down from their parents
During what is called as raynauds attacks the skin may turn white and blue for a short time
Answer:
Raynaud causes you to have episodic spasms, called vasospastic attacks, in response to cold temperatures or stress.
Explanation:
During a Raynaud's attack, the arterioles and capillaries in your fingers and toes tighten more than they should. As a result, your skin in the affected area turns white and then blue
Part A
Which statement best explains what caused some
theropods to develop feathers?
A mutation in DNA affected the types of
proteins produced by placodes.
b
A protein in the placodes caused a mutation
in the gene that produces feathers.
a
A mutation in the placode gene caused
placodes to produce different DNA.
A mutation in DNA caused the placodes that
control genes to grow feathers.
Part B
Which information is evidence that best supports the
answer to Part A?
The DNA of modern-day vertebrates codes for
the proteins in placodes.
b
All vertebrate embryos have the same genetic
mutations in their placode DNA.
Placodes in all modern-day embryos contain
the same number of mutations.
d
A single placode can spontaneously develop
into any type of body covering.
The statement that best explain the cause of some theropods to develop feathers is (option D) A mutation in DNA caused the placodes that control genes to grow feathers.
The information that best supports the answer to Part A is (option A) The DNA of modern-day vertebrates codes for the proteins in placodes.
What are placodes?Placodes develop during embryonic growth from thickened regions of epithelium that give rise to vital sensory organs and structures including teeth, feathers, hair follicles and specific glands. These delicate patches represent the cornerstone for morphogenesis by initiating the differentiation into complex tissue patterns.
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Describe the roles of B and T cells in providing immunity for a specific viral disease
B and T lymphocytes protect against viruses.
B cells produce antibodies that neutralise virus particles. B cells triggered by viruses create high amounts of virus-specific antibodies. These antibodies neutralise the virus, preventing it from infecting healthy cells.
T lymphocytes kill infected cells directly. They destroy virus-infected cells before they spread to healthy ones. T cells also stimulate and coordinate the immune response to target the viral infection. B and T lymphocytes cooperate to fight viruses.
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Describe the results of the investigation
Note that the above investigation tested the protective effect of various oncentraion of two crypprotectants , trehalose and glycrrol on an rspiratory enzyme that was subjected to very low temperatures to the freezing pint. and then allowed to go back to the optimum temprature.
What was the outcome?The graph shows that trehalose had a more significant protective effect thatn glycerol.
It also shows that the exposure to optimum temperatures was to test the level of protection given by the cryoprotectants.
Note that the objective of the investigation was to see how effective cryoprotectants can be in preserving the actions of enzymes for future usage.
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13. As a direct result of the life process called
cellular respiration in humans,
(1) liquid wastes are eliminated from the body
(2) food is digested and absorbed into the blood
(3) energy is released from digested food within
the cells
(4) nutrients are transported within the cells
Through cellular respiration, cells use organic compounds taken from food to produce energy. Option (3) energy is released from digested food within the cells.
What is cellular respiration?
Cellular respiration is the process by which cells degrade organic compounds and turn them into energy.
Cellular respiration follows two ways, aerobic and anaerobic respration, which depend on the presence or absence of oxygen, and both of them begin with the process of glycolysis, which occurs in the cytoplasm and does not need oxygen to occur.
In human, occurs aerobic cellular respiration.
1. Occurs in the presence of free oxygen.
2. Series of reactions by which pyruvic acid (product of glycolysis) turns into CO₂ and H₂O, producing many ATP molecules.
3. Respiration occurs in the mitochondria.
4. Takes place in two steps or stages: Krebs cycle and electron transporter chain.
5. Glycolysis and Krebs cycle produce electrons, which then travel along the electron transporter chain while releasing energy, and ATP is produced.
According to this framework, the correct option is (3) energy is released from digested food within the cells.
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What are the complementary base pairs in a dna molecule
Answer:
DNA base pair. Under normal circumstances, the nitrogen-containing bases adenine (A) and thymine (T) pair together, and cytosine (C) and guanine (G) pair together. The binding of these base pairs forms the structure of DNA .
Explanation:
help please! we have to look at the pyramid and create a claim about how we think energy will change and if there is the same amount of energy at each level
Answer:
As you move up the pyramid, through the trophic levels to primary, secondary and tertiary consumers, the amount of energy decreases and the levels become smaller. While energy can not be created or destroyed is it released as heat within each level. Approximately only 10% of energy is passed from one level to the next.
Explanation:
Which of the following statements are correct, with respect to mask wearing recommendations? (Select 3 correct answers): a. You do not need to undertake hand hygiene before removing a used mask
b. You can wear the same mask for multiple patients where they do not carry an infection risk.
c. You can reuse a mask once it has been removed only if it's with the same patient d. Masks need to be correctly fitted to be effective
e. You should change masks between each patient
f. You should avoid touching the front of the mask
The correct statements in respect to respect to mask wearing recommendations are:
d. Masks need to be correctly fitted to be effective
e. You should change masks between each patient
f. You should avoid touching the front of the mask
Why are mask important?In the realm of battling infectious illnesses, particularly respiratory diseases like COVID-19, the employment of masks is undeniably crucial.
These masks perform their function by trapping released particles when somebody is talking, coughing or sneezing, which commonly host the virus responsible for causing these illnesses.
Through donning a mask, individuals can not only safeguard themselves, but also the well-being of others from falling prey to and promoting disease transmission.
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Which of the
following is a
statistical test?
A. theory
B. ANOVA
C. hypothesis
D. area
Area is not a statistical test. The correct option is D.
What are statistical tests?
Statistical tests are mathematical tests performed on data collected from research to make the interpretation of the research easily discernable.
There are two types of statistical tests:
Descriptive statistical tests
Inferential statistical tests
Descriptive statistical tests only arrange data in tables, lines, graphs, etc. It does so that trends can be seen just at a glance.
Inferential statistical tests are performed in order to arrive at logical conclusions based on the data obtained during research. They include t-tests, analysis of variance tests, tests for significant differences, and so on.
In other words, area is not part of any statistical test
Answer ANOVA
Explanation: it is the most statistical
Which type of mutation is illustrated below: *
Original: TAC-GAG-CGA-ATG
Mutation: TAC-GAG-GAA-TGG
A)Insertion
B)Deletion
C)Substitution
Also for the rest of the answers pls
Which of the following is the purpose for meiosis?
A. Unicellular organisms produce another organism
B. Multicellular organisms grow and develop
C. Multicellular organisms produce gametes
D. Multicellular organisms replace old, dead, or damaged cells
Answer:
C. Multicellular organisms produce gametes.
Explanation:
:)
This is an trick question what is there but you can't see it
i need someone to answer this quick please!! the question is looking at this picture, how does the energy change throughout the pyramid? Is there the same amount of energy at each level? please be specific and no one word answers
Answer:
In these Trophic Levels, Ten percent of energy is being passed up from one trophic level to another. Suppose, 10 percent of energy is being passed up from primary producers to primary consumers. Then, again, 10 percent of energy is being passed up from primary consumers to secondary consumers. the rest 90 percent of energy is used for metabolism, excretion, etc. Since producers produce their own food, the Suns energy is being passed down to the producers which are autotrophs. Since, Heterotrophs like the consumers can't produce their own food due to not being able to photosynthesize, The consume 10 percent energy from each trophic level going up
On a hot day in the African savannah, it would be
advantageous for an elephant to lose more heat
from its blood, so it should:
O Close as many blood vessels of the
digestive system as possible
O Increase its heart rate
O Dilate the blood vessels in its ears
O Let blood flow to all of the blood
vessels of the digestive system
O Constrict the blood vessels in its
ears
On a hot day in the African savannah, it would be advantageous for an elephant to lose more heat from its blood, so it should constrict the blood vessels in its ears.
Most mammals sweat through glands connected to pores, but elephants have pores only between their toes. By making all of their skin permeable and constrict they lose far more moisture via evaporation and are thus able to cool down faster.
One of the best physical cooling adaptations and constrict of both African and Asian elephants are their ears. Yes, you heard right – ears. In fact, elephants can lower their overall temperature by more than ten degrees celsius by simply flapping their massive ears to create wind.
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At the crossing of two white sheep, a lamb with a black coat is born.
How can this apparent anomaly be genetically explained?
Answer:
The two white sheep could have genetics of its ancestors.
Explanation:
Lets use a punnett square (file attached)
W = White
w = Black
The parents of the baby sheep could still have the recessive trait (w) in the genes making a chance of the baby being black.
How do authors present and develop characters? Choose four answers.
Container closure integrity is the process of accounting for all of the starting material after processing.
The statement "Container closure integrity is the process of accounting for all of the starting material after processing" is not an accurate definition of container closure integrity. Therefore, while accounting for starting material after processing is important for ensuring product quality and safety, it is not an accurate definition of container closure integrity.
Container closure integrity (CCI) refers to the ability of a container and its closure system to maintain a barrier that protects the contents from environmental and microbial contamination throughout its intended shelf life. It is a critical aspect of product quality and safety, especially for sterile products and those that are sensitive to moisture, oxygen, or other environmental factors.
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list the differences between the dorsal and ventral aspects of the frog
here’s the other part
Answer:
first read the passage. then learn how to add an answer. if you dont understand it i would suggest you ask a peer.
Explanation:
What are 3 activities that release carbon dioxide into the atmosphere?
Answer:
Burning fossil fuels, releasing chemicals into the atmosphere, reducing the amount of forest cover, and the rapid expansion of farming, development, and industrial activities are releasing carbon dioxide into the atmosphere and changing the balance of the climate system.
What are the top 3 human activities that produce CO2?
Eighty-five percent of all human-produced carbon dioxide emissions come from the burning of fossil fuels like coal, natural gas and oil, including gasoline. The remainder results from the clearing of forests and other land use, as well as some industrial processes such as cement manufacturing.
What causes carbon dioxide to increase in the atmosphere?
Human Activity Is the Cause of Increased Greenhouse Gas Concentrations. Over the last century, burning of fossil fuels like coal and oil has increased the concentration of atmospheric carbon dioxide (CO2). This increase happens because the coal or oil burning process combines carbon with oxygen in the air to make CO2.
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