What would happen if earth had no atmosphere? a. the days would be hot and the nights would be cold. b. the days would be cold and the nights would be hot. c. earth would not have days. d. earth would not have nights.

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.

you should wear a lead protective shield when having teeth x-rays

hope i

-lavira : )