Homeostasis is how the body controls things inside of us. For example our body temperature and percentage of water. It is important because it means our cells will be able to live properly and also bacteria strives best at 37 degrees celsius (body temperature).
Answer:
'Aero' means air, which contains oxygen, leading to the name aerobic respiration. Aerobic respiration breaks down glucose and combines the broken down products with oxygen, making water and carbon dioxide. The carbon dioxide is a waste product of aerobic respiration because cells do not need it.
You subtract the number of protons and the mass to get the number of neutrons.