I'm not sure what you mean by "compartments", but the cardiovascular system consists of the heart, blood vessels, and approximately 5 liters of blood.
People because it’s for fun meaning the people use it
Answer:
it helps with Stage 2
Explanation:
in the nitrogen cycle you need bacteria to help it change into different forms of matter
Algae because it is a small organism that the larva state of animals live in and feed on it
