assimilation

Sulfur Cycle

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Sulfur is an essential nutrient for plant as well as animal. It is one of the constituent of many proteins and co-factors. The major reserve of the element is the soil. Sulfur compounds can be used in various ways as oxidants or reductants in microbial respiration. The dominance of one or another transformation is governed … Read more

The Nitrogen cycle

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The cyclic movement of nitrogen between atmosphere and living organisms or the exchange of nitrogen between atmosphere and living organisms is known as nitrogen cycle. It is also one of the gaseous-cycle. Nitrogen is the most essential element for almost all forms of life. Living organisms need nitrogen atoms to make amino acids, proteins, enzymes, … Read more