10. True or False- Gas exchange occurs in both the upper and lower respiratory tracts. I REALLY NEED THIS!

true

Explanation:

I think

but not sure

False

Explanation:

Gas exchange in humans occurs only in the lower respiratory tract, the alveoli to be precise.

carbohydrates: (starches and sugars) composed of carbon, hydrogen, and oxygen.

lipids: (fats, oils, and waxes) are made of carbon and hydrogen atoms.

nucleic acids: contain hydrogen, oxygen, nitrogen, carbon, and phosphorus. they are polymers of nucleotides. a nucleotide has three parts, a 5-carbon sugar, a phosphate     (-po⬇️4) group, and a nitrogenous base.

proteins: made up of nitrogen, carbon, hydrogen, and oxygen. they are polymers of amino acids.

the growth of the plants is affected by the heat of the light. what is the student doing?