Question

In a certain population of lizards, some of the lizards have longer legs than others. After a new kind of predator is introduced to the ecosystem, a change occurs in the lizard population. This change is shown by the following graph.
Which of the following best explains what may have caused this change?

A.
Lizards with long legs are more attractive as food for the new predator.
B.
Lizards with long legs can run faster to escape the new predator.
C.
Lizards with short legs can climb trees better to escape the new predator.
D.
Lizards with short legs need less food every day than the new predator.

Answer 1

Answer:B

Explanation:

If lizards with long legs can run faster to escape the new predator than lizards with short legs can, then the long-legged lizards are more likely to survive and reproduce. The short-legged lizards are more likely to be caught by the predator, so they are less likely to survive and reproduce. Because of this, the majority of the lizards' offspring have long legs.