The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted
into various chemical forms as it circulates among the atmosphere and terrestrial
This module provides an overview of the nitrogen cycle and the chemical
changes that govern the cycle.
The Nitrogen Cycle. All life requires nitrogen-compounds, e.g., proteins and
nucleic acids. Air, which is 79% nitrogen gas (N2), is the major reservoir of
Kids learn about the nitrogen cycle and how this nutrient travels through the
ecosystem to sustain life on Earth.
The Nitrogen Cycle. Take a deep breath. Most of what you just inhaled is nitrogen
. In fact, 80% of the air in our atmosphere is made of nitrogen. Your body does ...
The nitrogen cycle represents one of the most important nutrient cycles found in
terrestrial ecosystems (Figure 9s-1). Nitrogen is used by living organisms to ...
Nitrogen is one of the primary nutrients critical for the survival of all living
organisms. Although nitrogen is very abundant in the atmosphere, it is largely ...
The Nitrogen Cycle. This interactive activity adapted from the University of Alberta
illustrates how, through a process called fixation, nitrogen flows from the ...
Overview: The nitrogen cycle involves three major steps: nitrogen fixation,
nitrification, and denitrification. It is a cycle within the biosphere which involves
How does the nitrogen cycle work? ▫. Step 1- Nitrogen Fixation- Special bacteria
convert the nitrogen gas (N2 ) to ammonia (NH3) which the plants can use. ▫.