HELP PLEASE 100 POINTS What is the ecological impact of eutrophication on aquatic ecosystem?

A) There is less dissolved oxygen in the water for fish and other animals because bacteria use oxygen when decomposing the algae.

B) The food chains become less complex because primary consumers do not have to work as hard to obtain food.

C) The food chains become more complex because a new producer is introduced.

D) There is more dissolved oxygen in the water for fish and other animals because the algae are photosynthetic.

Apicture would .

The answer would be c, white eyes are homozygous recessive. in the early 1900s, morgan conducted several experiments with vinegar  flies (drosophila). one  sample revealed an anomaly: a  white-eyed, single male fly. he attempted to breed this fly with the typical red-eyed females. the offspring were all red-eyed. using flies from this new generation (brother-sister pairs)  produced some red-eyed and a few white-eyed flies. the white-eyed were all male. in later experiments, he was able to produce white-eyed females. this proved that white eyes are not lethal to either sex (ruling out a and b). since the percentage of white eyes to red eyes is so low, white eyes are not a dominant trait. it would be a recessive trait.