The Immune system and Endocrine system work
together to remove these wastes from their cells.
Answer: The water in the earth is older than earth itself.The water inside earth came out as steam from volcanic vents and the clouds rained down water..Comets also contain lot of water ice.Early period of solar system large amount of comets and asteroids hit the earth They also brought lot of water.
Explanation:
4. A
srry thats the only thing i can answer
