Answer:
Glucose
Explanation:
Glucose is used by plants for energy and to make other substances like cellulose
Day and night is caused by the earth rotating on its axis throughout 24hrs
Amino acids. These class of compounds
are considered the building blocks of most organisms, and around 500 of these
are known and indentified. All proteins, carbohydrates, and nucleic acids are
polymers ("many units") and each unit is an amino acid.
The answer is D.Reproduction
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