28 - Home - South Side High School

of an aquarium containing water, soil, green plants, a snail and a fish. 4. Which gas do the snail and fish release into the water? oxygen (3) carbon dioxide. nitrogen (4) hydrogen. 5. The fish in the aquarium functions as a . producer (3) decomposer. consumer (4) parasite. The gas released by the green plants is used by the snail for ................
................