A hard sedimentary rock composed, mainly of calcium carbonate or dolomite, used as a building material, and in the making of cement

The process that moves carbon between plants, animals and microbes minerals in the earth and the atmosphere

Rapid chemical combination of a substance with oxygen involving the production of heat and light

Interacts with the rock cycle in the processes of weathering and dissolution precipitation of minerals

Consisting of microscopic plants

The process of converting natural nitrogen compounds into ammonia

A salt of nitric acid containing the anion NO3

Bacteria, living in symbiosis with another organism or each other

Bacteria, living in symbiosis with another organism or each other

Energy from lightning is used to breakdown nitrogen into nitrogen oxide and is then used by plants

The process of absorption of vitamins, minerals, and other chemicals from food as part of the nutrition of an organism

The microbial process of reducing nitrate and nitrate to gastric forms of nitrogen, principally nitrous oxide into into oh, and nitrogen

Microorganisms that survive independently without a symbiotic relationship with plants

The process of water soaking into the ground

The water movement from the soil to the atmosphere in plants

The process of a solid vaporizing into the atmosphere without first melting into water solid to gas