The Circulatory System delivers oxygen and nutrients in the blood to the surrounding cells to maintain Homeostasis. The blood in the Circulatory System is needed throughout the body so that other systems work properly. Like for instance the Nervous System has the brain, and the brain needs blood to function.
Answer:
A law is a fact that cannot be changed, A theory however can be changed over the course of time.
Explanation:
I took tests
Answer: D
Explanation: For cellular reproduction, you'll need mitosis, since it is the moment in the cell cycle where chromosomes are separated into two new nuclei.
soil is an abiotic in this ecosystem