This is an easy one you need to just ask teacher for help
Answer:Digestive and muscular systems would be working together to chew food and work it down to the stomach to be digested. The digestive system and circulatory circulatory system would be working together to break food down and move nutrients to cells. The nervous system decides what to eat and when to chew.
Explanation:
Answer:
it's a molecule
Explanation:
if it was just hydrogen it would be an atom, but when you add another element it becomes a molecule.