Afew mold spores land on the skin but do not survive due to the lack of moisture and the presence of oxygen. these spores have been prevented from harming the body by which type of barrier?
biological
chemical
physical
mechanical

Physical , just took test!

Explanation:

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.

c. the initial amount of money placed in the savings account