B. What effect would the loss of nitrogen fixers have on the nitrogen cycle and the world? Justify your answer.

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A: ozone shield is a layer of atmosphere.

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A: Bioremediation

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Metabolic pathways

Metabolism is defined as the group of life-supporting, enzyme-mediated chemical reactions in organisms. A metabolic pathway is a set of these chemical reactions that involve anabolism (synthesis of complex biomolecules) and catabolism (breakdown of biomolecules into small molecules) that occur inside a cell. Metabolites are the reacting substances, products, and intermediate substances of an enzymatic process that are altered by a series of chemical events catalyzed by enzymes.