Commercial fishing in certain parts of the ocean decreases the number of small fish. as a result, large fish and are negatively affected because there is less oxygen in the water. are positively affected because the small fish polluted the water. are negatively affected because they feed on the small fish. are positively affected because there is more space.

i'm gonna put a couple so you can chose from

explanation:

if you know the fur color of the offspring mice, you can use the ratios to identify the genotypes of the parents.

if either parent mouse passes a dominant allele, the offspring will have black fur.

if the parental mice has two different fur color (i.e white and black) , the color of the offspring's fur would be either black, white, or the combination of both (grey)

hope this : )