There are green and red bugs living in an area. As a result of an environmental change, birds that live in the same area grow in numbers. These birds eat the bugs, and they prefer the taste of the red bugs.
Answer
A
Green bugs will survive better and reproduce, so the bug population will evolve into mostly green bugs.
B
Red bugs will survive better and reproduce, but the bug population will evolve into mostly green bugs.
C
Green bugs will survive better and reproduce, but the bug population will evolve into mostly red bugs.
D
Red bugs will survive better and reproduce, so the bug population will evolve into mostly red bugs.
Explanation
Because the birds prefer red bugs, red bugs are more likely to be eaten. Green bugs therefore have a survival advantage and are more likely to reproduce and pass on traits associated with their color. Over generations, green bugs are likely to make up most of the population, as choice A states.
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