Explain the importance of microbes. Distinguish between aerobic respiration and anaerobic respiration (fermentation). What two processes sustain ecosystems and the biosphere and how are they linked?

Answer: Importance of Microbes - serving to ferment foods, produce fuel, enzymes and bioactive compounds.

Aerobic (fermentation) uses oxygen anaerobic (fermentation) does not use oxygen.

Processes energy flow and nutrient cycling.

(How are they linked?) These two processes are linked through the natural services that are components of the earth.