Describe the fish and the algae’s role in cycling carbon in the atmosphere/water (environment) from the above illustration. Write in complete sentences, and make sure to include in your answer:
What impact do fish have on the amount of CO2 in the water
What impact does algae have on the amount of CO2 in the atmosphere
Which organism, fish or algae, can store carbon and how
Explain whether each organism uses or produces CO2

Carbon cycle is the series of activities that utilize and release carbon from and into the atmosphere respectively. Carbon in the form of carbon dioxide (CO2) moves in and out of living organisms. In this case involving the fish (an animal) and an algae (a protist).

Fishes are animals, hence, they undergo RESPIRATION process to release carbon dioxide into the atmosphere as a waste product, hence, making C02 concentration in a water body increase. However, contrarily, algae are photosynthetic organisms that make use of carbon dioxide as a carbon source when undergoing the process of photosynthesis. Hence, they reduce the amount of C02 in the atmosphere.

Carbon is stored as biomass in every living organisms. For example, when the fish feeds on algae, it digests it and forms carbon compounds which get stored until they die and get decomposed, which release the stored carbon in them.

Fish produces C02 via the process of respiration respiration while algae uses the C02 via the process of photosynthesis.