The picture below shows a school aquarium, an aquatic microhabitat. The aquarium has fish, live plants, a rocky bottom, a light source, but no oxygen pump.
All of the following are ways that this microhabitat supports the organisms that live in it EXCEPT —
a. it has oxygen that the plants produce for the fish to breathe.
b. it has carbon dioxide that the fish release for the plants to absorb.
c. it has rocks for the fish to eat for energy.
d. it has a light source for the plants to make food.