How is Crohn's disease treated?

Asmall number of finches are removed randomly from the wild and placed in a protected bird area. they are given as much food as they need and have plenty of space. why would natural selection not occur in this population? a. there is no reason for genetic mutation to occur. b. the birds compete for limited resources, c. the population has not reached carrying capacity. d. there is no genetic variation in the finches.

As a small change in a person's dna can cause a genetic disorder

What best describes the dropping height of a ball that bounces back up to a height of 45 cm