|
1
|
nitrogen
|
agricultural societies
|
Nitrogen is essential for soil fertility and crop growth in agricultural societies, often replenished through fertilizers or crop rotation.
|
6
|
|
2
|
nitrogen
|
farming communities
|
Nitrogen is essential for soil fertility and plant growth in farming communities.
|
2
|
|
3
|
nitrogen
|
chemical engineering communities
|
Nitrogen is essential for the production of fertilizers and industrial chemicals, and is abundant in the Earth's atmosphere as N2 gas.
|
1
|
|
4
|
nitrogen
|
urban community
|
Nitrogen is used in urban communities for the production of industrial chemicals such as fertilizers, explosives, and pharmaceuticals.
|
1
|