People poisoned by CO are
often given 100 percent O2 in a room
with two to three times normal
atmospheric pressure. Explain why
more oxygen would enter their blood
under these conditions.

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.

where is the scientific experiment?

the fossil record provides evidence of a common ancestor to many species.

50% lit on the left side