Earth's air is comprised primarily of Select one:
A. Nitrogen
B. Carbon Dioxide
C. Water Vapor
D. Oxygen

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.

the answer to your question is slate