Suppose a certain species of insect lives in the lush green canopy of the rain forest. Some of the insects are bright green in color, and some are bright yellow. Assume there is a natural predator of the insect in the area. What do you expect to happen to the populations of the green and the yellow insects over time?
Answer
A
The green insect population will increase and the yellow insect population will decrease.
B
The green insect population will decrease and the yellow insect population will increase.
C
Both insect populations will remain constant over time.
D
Both insect populations will increase over time.
Explanation
In a lush green canopy, bright green insects are better camouflaged than bright yellow insects. A predator is more likely to spot and eat the yellow insects, so more green insects are likely to survive and reproduce. Over time, the green population should increase while the yellow population decreases. This describes choice A: the green insect population will increase and the yellow insect population will decrease.
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