Question

Which example describes biological evolution?

Answer 1

Answer:

a.Over time, a caterpillar species becomes as green as the leaves it eats.

Explanation:

Evolution means the gradual formation of complex organisms from simple types, a process that usually take several years (geological time).

The gradual change happens as a result of continuous adaptation by organisms to ever changing environment.

Option b could have been considered along with option a, but evolution process takes much more than 50 years.

Hence, the correct option is a.