Well, to put it to the simplest way I can get it. Protein acts as a car engine because it gives us the energy to go and do things like a car engine gives a car the will to move.
Its either dead material or organisms that eat producers
Inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli. This is what happens in the alveoli during gas exchange
Answer:
1. Renewable
2. Vegetation
3. Reforestation
I think this is right. I am not sure. Trust your instincts.
