The greatest surface area for gas exchange is found in the Alveoli
Carbon is the only element that can form so many different compounds because each carbon atom can form four chemical bonds to other atoms, and because the carbon atom is just the right, small size to fit in comfortably as parts of very large molecules.
Firstly they are not membranes and they are villi's which increase the surface area during digestion
The ozone layer is damaged by all
Answer:
controlled experiment
Explanation:
you need to do it more than once. and you don't need to answer questions
