If a variety of light colored moths and dark colored moths lived in a forest of trees with a lighter colored bark and the environment changed causing the bark to darken, what will likely happen to the frequency of the genes that control the light and dark colors? A.
The frequency of the dark colored gene increases and the frequency of the light colored gene decreases.
B.
The frequency of the light colored gene increases and the frequency of the dark colored gene decreases.
C.
The gene frequency of the light and dark genes remain the same.
D.
The frequency of the dark colored gene stays the same and the frequency of the light colored gene increases.

A.

Explanation:

Dark coloured moths will be better camouflaged and so better protected from predators. More of them will survive and reproduce, increasing the frequency of dark coloured genes.

Light coloured gene will provide less camouflage, those moths will be caught by predators more often and live to reproduce less. So the light coloured gene will decrease.

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.

2%? i tried finding the exact sorry if it's not 100% correct ; -;