Question

Which of the following is the best example of natural selection?

A)A population of a rabbits decreases in number as some move to another area.
B)The shell of a crab becomes harder over time as a result of being hunted by a predator.
C)A person's muscles become firmer from riding a bike for exercise.
D)A cheetah living in a zoo lives 10 years longer than average.

Answer 1

D

Step-by-step explanation:

Answer 2

B)The shell of a crab becomes harder over time as a result of being hunted by a predator.

Step-by-step explanation: