The Nitrogen Cycle is a natural process that describes how nitrogen moves through the environment. It involves several stages, including nitrogen fixation, where bacteria convert atmospheric nitrogen into forms that plants can use. This process is essential for plant growth and helps maintain healthy ecosystems. After plants absorb nitrogen, it moves up the food chain when animals eat them. When plants and animals die, decomposers break down their bodies, returning nitrogen to the soil. Finally, other bacteria convert this nitrogen back into atmospheric nitrogen, completing the cycle and ensuring a continuous supply of this vital element.