1)
a. One repeating unit
b. Two repeating units
c. Three repeating units
d. 500 to 20,000 repeating units
3)
a. Natural polymers: starch, proteins, jelatin, and nucleic acid
b. Synthetic polymers: fabrics, rubber, foams, and adhesives
6) The term unsaturated is used to describe structures of alkenes because they contain carbon-carbon double bonds.
13) I can't find the answer.
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