Why is homeostasis called internal balance of a living thing?
(own words)

the homeostasis used the cells to survive  off of the oxygen, nutrients, and it is very necessary for the well-being of both individual cells and the entire body.

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.

answer; ///i believe the correct answer is (aids) acquired immune deficiency syndrome;