When DDT was introduced in our country as a pesticide, the eagle population began to decrease. The effect on this top consumer is the result of A. biomagnification
B. biodiversity
C. bioillumination
D. the 10% rule.

During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming