Answer: hope this helps
Explanation:
Aerobic bacteria use oxygen, which is added mechanically, to break down wastewater contaminants, converting it into energy. Bacteria use this energy to grow and reproduce. Anaerobic bacteria obtain oxygen from their food source. As anaerobic bacteria break down sludge, they produce methane gas. This methane gas can be used as an alternative energy source, called biogas, to fuel the wastewater treatment process.
The endocrine system is composed of glands that release insulin, a natural agent that breaks down sugars and glucose in the blood.
The answer would be mouth and stomach
Your rate of breathing is primarily regulated by the amount of oxygen in your blood.
Where are the answer options and a picture of the problem?
