Why are certain traits adaptations in one environment but not another

An adaptation must fit the environment

Explanation:

Different environments require different skills and abilities to survive there. For example elephants' ears have a lot of surface area, and elephant skin is exposed with relatively little hair. These features are adaptations in their hot environments where they need to give off heat and cool down, but elephants would not be adaptations in very cold, arctic environments where they would need to retain heat. Same applies for fish as they can live inside water but if they are forced to live in earth they cannot live there because they cannot adapt the environment.

What are you tryna ask us

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.