How will adding worms to the terrarium affect nitrogen levels in the soil?

Worms are very important in the ecosystem. It helps to increase the amount of water and air that gets in the soil. Worms break down organic matter like grass and leaves for the plants to use. If the worm eats, they leave behind castings that are very useful kind of fertilizer.

Explanation:

the answer is b. 0; 4

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.