Please hurry I have 5mins left Which pair of elements can be used to determine the age of a fossil that is over one billion years old?

A. lead, which is radioactive, and uranium, which is stable

B. carbon, which is radioactive, and nitrogen, which is stable

C. argon, which is radioactive, and lead, which is stable

D. potassium, which is radioactive, and argon, which is stable

In the name staphylococcus aureus, aureus is thea. kingdom.b. specific name.c. genus.d. domain name.e. family name.

According to the cladogram, which organisms have roundworms as a common ancestor?

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.