PLEASE HELP !! The Roman Republic: Tutorial
Which two statements are true about the Roman Republic?

a. Trade was necessary to keep the Roman Republic strong.

b. Roman trade was limited to regions within Italy.

c. The Roman Republic used paper money for trade.

d. Romans used their money to show off Rome's greatness.
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answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.