Review your understanding of the nitrogen cycle in this free article aligned to AP standards.

Jun 9, 2016 · Bacteria play a key role in the nitrogen cycle. Nitrogen enters the living world by way of bacteria and other single-celled prokaryotes, which convert atmospheric nitrogen— N 2 —into …

Learn about the nitrogen cycle and how nitrogen moves from the atmosphere to living organisms through different chemical forms.

The nitrogen cycle is a crucial process that converts atmospheric nitrogen into a form that plants and other organisms can use. This process, known as nitrogen fixation, is primarily carried out by …

Review your understanding of the nitrogen cycle in this free article aligned to AP standards.

Did you know that nitrogen keeps moving through the air, soil, plants, and animals in a never-ending cycle? Created by Shankar Nair.

Biogeochemical cycles are nature's way of recycling essential elements for life, like water, carbon, nitrogen, and phosphorus. These cycles circulate these molecules through ecosystems and the …

Did you know that nitrogen keeps moving through the air, soil, plants, and animals in a never-ending cycle? Created by Shankar Nair.

Did you know that nitrogen keeps moving through the air, soil, plants, and animals in a never-ending cycle? Created by Shankar Nair.

Nitrogen-metabolizing prokaryotes include nitrogen fixers, nitrifiers, and denitrifiers. They play key roles in the nitrogen cycle by converting nitrogen compounds from one chemical form to another.