To use less of something

the answer is c) an oak tree

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.

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

c is the answer. hope this