What human activities affect the nitrogen cycle
Biology
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Human activities significantly impact the nitrogen cycle, primarily by increasing the amount of reactive nitrogen in the environment.
- Fossil Fuel Combustion: Burning fossil fuels releases nitrogen oxides (NOx) into the atmosphere, contributing to acid rain and smog.
- Fertilizer Use: The extensive use of synthetic nitrogen fertilizers in agriculture leads to excess nitrogen runoff into waterways, causing eutrophication. This process depletes oxygen in water bodies, harming aquatic life.
- Deforestation: Removing forests reduces the uptake of nitrogen by trees and can lead to increased nitrogen leaching from the soil.
- Livestock Farming: Large-scale animal agriculture produces significant amounts of ammonia (NH₃) from manure, which can be released into the atmosphere and soil.
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