Answer:
By comparing the plants and animals we've bred for thousands of years for the perfect amount of food and parts we like. It's possible to create perfect humans, and to make humans immune to disease and genetic disabilities
Explanation:
Cells need a source of energy, they get this energy by breaking down food molecules to release, the stored chemical energy.
Without a control group there wouldn’t be any basis for knowing if a result is due to the variable being tested
Subordinate clause I just took test
