Dam affects land upstream expect land becomes flooded. Dams are constructed over the river's function. The dams help in the generation of electricity which is known as hydrothermal energy. They help in trapping the sediments, and rock bed on the riverside the place where fish spawn.
The feature of the habitat which affects the rivers are trapped such as logs, gravel, and other food option. There are negative effects of the building of dams are displacement of the people as the area gets flooded and maintenance and creation cost are high and complex.
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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
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
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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Which of the following statements is correct with respect to removing eye protection: O a. You can repossess eye protection provided it is cleaned appropriately.
b. You should always discard eye protection after use
c. You should perform hand hygiene before their removal, but you don't need to do this after
d. You can reuse eye protection without disinfecting as this is not required with eye protection
The statement "You can repossess eye protection provided it is cleaned appropriately" (option A) is correct with respect to removing eye protection.
What are eye protections?Eye protection are devices or equipment which plays an essential role in ensuring individuals can perform their jobs effectively without placing their vision at risk.
Various types of eye protections such as goggles, safety glasses and face shields are used extensively across different work arenas for utmost functionality and injury prevention against hazardous situations like flying projectiles or radiation exposure.
Also for those engaging in sports or hobbies that include elements with similar threats should also consider protecting themselves using appropriate eyewear option tailored for their needs.
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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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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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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:
:)
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 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
1. Fresh blood should be allowed to
A. Clump
B. Coagulate
C. Heat then cool
D. Air dry
before being analyzed.
This is an trick question what is there but you can't see it
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%
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.
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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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:
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
questions on phylum protozoa
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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What is an autograph?
The definition of an autograph is the signature of a person written with his own hand, especially one written by someone well-known.
Answer: a signature, especially that of a celebrity written as a memento for an admirer
Explanation:
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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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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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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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:
1. What is the position of the atomic number and its chemical properties based on that position?
The quantity of protons in the nucleus of an element's atom is known as the element's atomic number. In the periodic table, the element's atomic number is normally listed above or to the left of the chemical symbol.
The quantity and configuration of electrons in an element's atoms play a significant role in determining its chemical characteristics. The location of an element in the periodic table is closely tied to its chemical characteristics because the number of protons in the nucleus of an atom defines its atomic number, and each element has a different number of protons.
Because of their similar electronic configurations, elements in the same group (vertical column) of the periodic table frequently have similar chemical properties, whereas elements in other groups frequently have different chemical properties as a result of their varied electronic configurations.
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Assume there are 500 units of energy in the producer level of the energy pyramid. How many units of energy are available at the first level consumer store? How many units will be at the 2nd level consumers store?
Only about 10% of the energy from each trophic level is transferred to the following level in an energy pyramid. This implies that only 10%, or 50 units, of the energy accessible at the first level consumer level, if there are 500 units of energy at the producer level.
Similar to this, only 10%, or 5 units, of the 50 units of energy at the first level consumer level would be accessible at the second level consumer level.
Therefore, the amount of energy at each trophic level would be:
Producer level: 500 units of energyFirst level consumer: 50 units of energySecond level consumer: 5 units of energyLearn more about trophic level, here:
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Can someone help me out with these questions pls
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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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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Which option is correct
There is a single round of DNA replication is NOT a reason that meiosis produces haploid cells (option A).
What are haploid cells?Produced via the complex process of meiosis, haploid cells differ from their diploid cell counterparts in that they contain just one set as opposed to two sets of chromosomes; for humans, this means that haploids hold just 23 chromosonal pairs.
During meiosis, two rounds of cell division take place after DNA has been replicated resulting in four unique but genetically diverse haploidal daughter cells.
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Which of these is an example of a biotic part of the ecosystem? water trees soil sun
Answer:
The answer to this question is Tress. Hope this helps
Answer:
water
Explanation: