Answer:
Unknown
Explanation:
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Answer: matter is made up of molecules, the behavior of matter is dictated by the behaviors of the molecules.
Explanation:
An unlimited amount means that there would always be more of it: so they can't run out of it, there will always be more! and since they can't run out of it, they don't have to worry or make choices - they can just use it without any limits and thinking about it.
So the correct answer is
a. have to place limits on its use.