One reason is for safety! in case you get stranded in a body of water you can keep yourself afloat
...respiration!
Respiration is the biochemical process in which the cells of an organism obtain energy by combining oxygen and glucose, resulting in the release of carbon dioxide, water, and ATP (the currency of energy in cells). Source: https://study.com/academy/lesson/what-is-respiration-definition-process-equation.html
I hope that helps! :)
Answer:I think the answer is “ DNA contains the instructions used to make proteins.”
Explanation: