CHO is the short term for carbohydrate in medical lingo.
So it would be Carbon, Hydrogen and Oxygen
A. Carbon is the answer
Then the model will become useless. originally the bottle should be air tight only tubes connected to the balloons, so that pressure can be shown when you adjust the plastic sheet in the bottom of the model. but now if there's a hole, air can move freely in or out the bottle and the model will not be able to show anything that occurs during respiration
Monosaccharides. mono = 1
Covalent bond because a covalent bond is when it only shares electrons and it doesn't give or lose.
Explanation:
c.conduct heat and electricity well