Most abundant gas; obtained by plants from bacteria in the soil, and obtained by people from foods they eat

Nitrogen:
The most abundant gas; obtained by plants from bacteria in the soil, and obtained by people from the food they eat.

Besides creating up seventy-eight of the Earth's atmosphere, variety 7|chemical element|element|gas} features a number of uses. Since it's a gas, it is often used to replace air and cut back or eliminate reaction of materials.

The most necessary use is in making ammonia, that successively is employed to form plant food, explosives and alternative materials. Finally, N is employed as a refrigerant for terribly low temperatures.

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.