Nitrogen Cycle Archives

Plants take up nitrogen in their roots. Animals get these compounds when they eat plants. Nitrogen compounds in the organic matter re-enter the soil when plants and animals die or excrete waste.

In some plants, thebacteria live in small growths on the roots called nodules. The NH3 produced by the bacteria is absorbed by the plant. Nitrogen fixation is a partnership between a plant and a bacterium.

Humans have changed the natural carbon cycle by burning fossil fuels. The nitrogen cycle begins with nitrogen gas in the atmosphere and goes through nitrogen-fixing organisms to plants, animals, and the soil.

Other innovations could help reduce the amount of nitrogen that is carried away from the plants and into the water. Reducing the gas emissions from soils and water systems could be one of the innovations.

The global carbon and nitrogen cycles are being altered by human activities. The burning of fossil fuels is changing the global carbon cycle by increasing the carbon dioxide concentration in the atmosphere.

Global warming is caused by increased carbon dioxide and other greenhouse gases in the atmosphere. The nitrogen cycle begins with nitrogen gas in the atmosphere and goes through nitrogen-fixing organisms to plants, animals, and the soil.

Ammonification is the last step of the nitrogen cycle involving an organic compound. This is the first one.

We enter into a danger zone if the boundary is crossed. The risk of crossing thresholds that cause abrupt environmental change within continental- to planetary-scale systems makes transgressing one or more planetary boundaries highly damaging or even catastrophic.

Plants absorb nitrogen and nitrate during the process of conversion to organic compounds. Animals can’t absorb nitrates on their own. They get their supplies from consuming plants or animals.

The nitrogen cycle helps bring in nitrogen from the air into plants and animals. The nitrogen cycle is very important for plants.