Before DNA can be copied, which of the following must happen? O Break the hydrogen bonds
O Cell division
O All of the above
O Make the mRNA

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

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.

Which of the following is required of a new drug?me