Scientists were able to determine the age of the earth from rock samples that were analyzed by what technique: fossil records, radio metric dating, extinction, geologic time scale

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

answer; i believe the answer is hydraulic action;