Nitrogen Cycle (2)

Process in the nitrogen cycle (1)

Process of nitrate ion addition to the soil

Process in the nitrogen cycle (2)

Process of nitrate ion extraction from the soil

Example of processes that add nitrate ions to the soil (1)

Lightning and volcanic eruptions

Example of processes that add nitrate ions to the soil (2)

Nitrogen fixation

Example of processes that add nitrate ions to the soil (3)

Nitrification

Example of processes that extract nitrate ions from the soil (1)

Process of absorbing nitrate ions from the soil

Example of processes that extract nitrate ions from the soil (2)

Denitrification

Example of processes that extract nitrate ions from the soil (3)

Nitrate leaching

Process that add nitrate ion ions to the soil through lightning and volcanic eruptions (1)

During lightning or volcanic eruptions, heat energy released at high temperatures oxidises nitrogen in the air to form nitrogen dioxide

Process that add nitrate ion ions to the soil through lightning and volcanic eruptions (2)

When it rains, nitrogen dioxide in the air dissolves in the rainwater to form nitric acid which falls to the surface of the earth