Which pairing accurately matches a biomolecule polymer with its monomer subunit? a. carbohydrate and sterols b. nucleic acid and bases c. lipid and fatty acids d. protein and amino acids

D. Proteins and amino acids

Explanation:

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D option, proteins and amino acids, is the only one that accurately matches the polymer with its monomer since proteins are assemblies of amino acids (there are 20 basic amino acids) that are bonded via consecutive chains or polypeptidic bonds.

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they are both synthetic elements

explanation:

d

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.