Robert decided to go for a run when he gets home from schooll. As he begins running, his breathing rate starts to increase. what are the mechanisms that cause his breathing rate to increase.

the heart pumping more blood to the lugs, legs, increasing his heart rate

Explanation:

hope this was helpful for you, and let me know anymore questions you may have. :)

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.