Nitrogen Cycle

Nitrogen Cycle

The nitrogen cycle is the process by which nitrogen moves through the air, soil, water, and living organisms. Nitrogen is essential for life because it is a major part of proteins and DNA. Although nitrogen gas makes up most of the atmosphere, it must be converted into usable forms by certain bact...

Like water and carbon, nitrogen is continuously recycled through the biosphere in a process called the nitrogen cycle, moving nitrogen between the atmosphere, soil, plants, and animals.

Although nitrogen gas makes up 78% of Earth’s atmosphere, it must be converted into usable forms for plants and animals to take up, which involves several ...