This interdependence between the two processes allows for a continuous cycle of energy conversion in plants. In summary, ...

or is decomposed back to CO2 through plant and soil respiration. This CO2 can return to the atmosphere or enter rivers; alternatively, it can react with soil minerals to form inorganic dissolved ...

The ammonia then becomes available for uptake by plants and other microorganisms for growth. Ecological Implications of Human Alterations to the Nitrogen Cycle Many human activities have a ...

Animals feed on plants, passing the carbon compounds along the food chain. Most carbon they consume is exhaled as carbon dioxide during respiration. The animals and plants eventually die.