Created by Brooke Campbell
The Carbon Cycle
Carbon is everywhere. We are composed of carbon as well as the food we eat and all of our supplies. It's all carbon-based. Carbon flowing between land, atmosphere, and oceans in an exchange is called the carbon cycle. This cycle is key to sustaining life on Earth. The amounts of carbon in the atmosphere have a direct effect on the climate. Humans are the greatest cause in changes in the natural carbon cycle. Burning fossil fuels has the greatest impact on the cycle. Overall, the carbon cycle is directly affecting our environment and it is important to maintain it.
The Nitrogen Cycle
The nitrogen cycle refers to the process of nitrogen converting between its various forms. It can be both biological and physical. About 78% of Earth's atmosphere is nitrogen. There is a scarcity of usable nitrogen in different ecosystems because it has limited availability. It has recently been found that rocks contain a significant source of nitrogen. Many processes of the cycle are carried out by microbes which fit together to fully form the nitrogen cycle.
The Phosphorous Cycle
The biogeochemical cycle that describes the movement of phosphorous through the lithosphere, hydrosphere, and biosphere is the phosphorous cycle. Unlike the other cycles, the atmosphere does not play a significant role in the movement of phosphorous because phosphorous are usually solids. Humans cause major changes to the global phosphorous cycle.