Bob was doing an experiment to see what affects the growth of tomato plants. Bob uses a different fertilizer in each of the experimental groups. He keeps everything else constant. Each day, Bob measures the growth of the plants. The height of the tomato plants represents what in the experiment?

Which system revise and send electrical signals throughout the body

What are the proteins in connectivity tissues of your foot examples of?

Which of the following is true of metabolism in its entirety in all organisms? a) metabolism depends on a constant supply of energy from food. b) metabolism uses all of an organism's resources. c) metabolism consists of all the energy transformation reactions in an organism. d) metabolism manages the increase of entropy in an organism.