Explain why a law is accepted as fact, but a theory is not

A law is a fact because it cannot be changed. A theory on the other hand can be changed over the course of time.

Explanation:

A law is 100% proven while a theory is not. A law is never wrong while a theory, although widely accepted or has been tested hundreds to thousands of times, may be found incomplete or eventually wrong.

Explanation:

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.