Carbon cycle
This cycle is cycled between the atmosphere, land, water, and organisms. Carbon first enters plants through photosynthesis. After it enters plants, it then is transferred to primary consumers by them eating the plants and so on. Carbon may also be converted into carbonates, which is in the bones. As bone marrow break down, carbon can be returned back to the environment.
Nitrogen Cycle
Nitrogen is cycled through the air, bacteria, and organisms in the Nitrogen Cycle. First the nitrogen-fixing bacteria(bacteria that changes the nitrogen into usable forms so that it can first be transferred to plants)The bacteria is located at the bottom of the roots of the plants. Plants that do not get nitrogen fixing bacteria from their roots gets them from the soil. Animals then eat the plants to get the nitrogen then so on. In order for the nitrogen to return back to the soil, organisms must die and decomposers decompose their bodies.
Phosphorus Cycle
Phosphate comes from rocks. Unlike the other cycles, the phosphorus cycle does not contain the air. It goes from the environment to organisms and then back to the environment. Rocks must first break down so that they can go into soil and plants obtain the phosphate from the runoff of the rocks. Animals then eat the plants and so on. Phosphorus is returned back to the environment when dead organisms are decomposed.
Sulfur Cycle
Rocks must first be weathered in this cycle.It is converted to sulfate and then released into the air. Plants get the sulfate from the air. Animals eat the plants to obtain the sulfur and so on. When organisms die and decompose, their sulfate is released back into the air.