Why is important to use cannabidiol in daphnia heart rate experiment

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

the cell cycle is the final answer! : )

the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.

it is because according to the process , scientific inquiry is a process with many steps because each step occurs to the scientist and if you just skip a step there would be no steps to scientific inquiry.