A component of certain biological molecules like phospholipids, DNA and adenosine triphosphate (ATP), phosphorus is circulated in the environment through the soil, water rocks and living organisms.

It is found organically as phosphate ion and is added to the soil and water through natural ...

Nitrogen is an essential component of biological molecules like amino and nucleic acids, but most living organisms cannot use the element in its pure form and need a derivative component, NH3(ammonia) to be able to synthesize organic components.

1. Nitrogen (N2) is converted in ammonia (NH3) by bacteria in water and soil, and subsequently converted into nitrite and its derivatives.
2. Plants get nitrogen from the soil through the roots, producing organic compounds.
3. Animals absorb nitrogen by eating the plants.
4. ...

1. Removal of CO2 from the atmosphere by plants and bacteria.
2. Generation of organic molecules, and building of biological mass in plants.
3. Consumption of plants by animals.
4. Respiration of animals restoring the CO2 in the atmosphere.
5. Dead and decaying organic ...

The planet’s ecosystem has many cycles, like the water cycle or the seasonal cycle, and one of the most important ones is the nutrient cycle. This is a biogeochemical cycle involving both living and nonliving components, describing the use, movement, and recycling of nutrients in the envi...