Is a genetic improvement a mutation?

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

Plz ! cattle ranchers and dairy farmers rarely allow all of their animals to reproduce instead they practice selective breeding and only encourage the reproduction of animals with specific features. which of the following cows would a dairy farm most likely choose to reproduce? a. a cow that makes a lot of milk. b. a cow that can run quickly. c. a cow with a think, soft fur. d. a cow with large, strong hooves.

Methane gas created by a cows flatulence especially in a large herd is a greenhouse gas. true or false.