USA HISTORY

Detailed explanation-1: -Overgrazing reduces the usefulness, productivity and biodiversity of the land and is one cause of desertification and erosion. Overgrazing is also seen as a cause of the spread of invasive species of non-native plants and of weeds.

Detailed explanation-2: -Continued overgrazing reduces inputs of soil organic matter because less plant biomass is available as litter, which in turn, reduces soil organic matter, nutrients, and biotic activity. This leads to deteriorated soil structure, which increases the potential for erosion and reduces water-holding capacity of soil.

Detailed explanation-3: -Overgrazing can reduce ground cover, enabling erosion and compaction of the land by wind and rain.. This reduces the ability for plants to grow and water to penetrate, which harms soil microbes and results in serious erosion of the land.

Detailed explanation-4: -Livestock Grazing Agricultural livestock are responsible for a large proportion of global greenhouse gas emissions, most notably methane. In addition, overgrazing is a major problem regarding environmental sustainability.