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.

it has rocks for the fish to eat for energy is wrong

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.