B. They are able to produce their own food.
1)Plant, Fish, Coral (i think coral)
2)Rocks, Water
3)Plant-Releases Oxygen Into Water
4)Plant-Releases Oxygen Into Water for the fish to breathe
5)Water-Helps Plant Grow
I’m pretty sure it’s C but try googling it
Nutrition is what help us grow and repair, nutrition has nutrients like water, minerals, and vitamins.