Variation is number of alleles for the wing color of the peppered moths. The wing color ranges from pure white to pure back.
Selection pressure is predation by birds.
Explanation:
In the wake of the industrial revolution, white-winged peppered moths had a large allelic frequency in the population compared to black-winged peppered moths. However, when the environment changed due to soot produced by industries (making the environment darker) white-winged peppered moths reduced while that of black moths increased.
This is because black moths were able to blend in and camouflage in the dark environment than white-winged peppered moths that stood out to their predators. Black moths, therefore, had an increased chance of reaching adulthood and passing their genes to the next generation. This increased the allelic frequency of black-winged peppered while that of white-winged moths reduced in the population.
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An exchange reaction occurs between compounds that, when written as a molecular equation, appear to involve the exchange of parts between the two reactants. An exchange reaction will occur when ions in solution form insoluble products, weak electrolytes, or non electrolytes.
Answer:
B) Available energy decreases as trophic levels increase.
Explanation:
Each time an organism consumes energy, it absorbs it. When it dies the energy is released and only some of it is consumed the organism that eats the first organism. This continues and by the end there is very little energy left because most of it was released into the world.
Answer;
-Step E
Explanation;
-The lysogenic cycle is a viral replication cycle
that does not kill the host immediately. The lytic cycle is the other type of viral replication cycle that results in the destruction of the infected cell and its membrane.
-All viruses undergo a replication cycle in their human host cell consisting of adsorption, penetration, uncoating, nucleic acid replication, maturation and release stages. During the maturation and release stage the virus release a protein that causes the cell wall to burst.
Answer: Calcium carbonate shells of marine organisms, like coral, oysters, and clams.
Explanation:
Carbon dioxide in the gaseous form is absorbed from the atmosphere into the oceanic waters. The carbon dioxide is generated due to human activity like burning of fossil fuels, deforestation, and by other activities. This increases the acidity of the oceanic waters, it affects the reef building in animals. The animals use the carbon dioxide to produce calcium carbonate structures that are used for building up the coral reefs and exoskeleton like shells of oysters and clams. This way carbon dioxide become an important component in the structure of the living organisms in the ocean. This way carbon dioxide get stored in the structures of marine organisms being the largest reservoir of carbon dioxide.
