Alveoli are found in lungs and exchamge O2 and Co2 !!
so answer is last one !!
Theories basic to all of the life sciences include the cell theory because all living things are made up of cells.
Answer:
Iron -> Fe - Group 8
Silver -> Ag - Group 11
Mercury -> Hg - Group 12
Oxygen -> O - Group 16
Gold -> Au - Group 11
Potassium -> K - Group 1
Xenon -> Xe - Group 18
Magnesium -> Mg - Group 2
Hydrogen -> H - Group 1
A. Osmosis is the answer for this question
