Answer:
the brain i think
Explanation:
Its your nervous system. I searched it up because I was pretty sure it wasn't the Brain
Muscular- Provides movement, support, and heat production
Nervous- Collects, transfers, and processes information and directs short-term change in other organ systems
My answer is Nitrogen Fixation.
Water molecules are polar molecules..
C. Chloroplast
I THINK IS D