Bodily functions that help keep it stable. Like sweating when your are hot keeps your body at a cooler temperature rather then burning up.
The pathways uses fat reserves to produce atp is aerobic respiration. In thesaurus, aerobic respiration is a type of respiration in which oxygen is taken in and carbon dioxide and water are produced; also the use in oxygen in the breakdown of foodstuffs to create energy.
Ecosystem ecologists are often most interested in tracing the movement of energy and matter through ecosystems.
Pollution of water and soil. The poison in fertilizer and pesticides will seep into groundwater supplies and contaminate the water.