the wheels are causing less friction between the ground and the box. in order to push it, less force is needed.
the answer: b a chromosome
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a reason why early living organisms on earth could not have survived on the surface was because the lack of an ozone layer. the answer is number 1.
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to answer your first question, i think it should not be legalized. so i guess you can say i disagree. to answer your second question, i have no idea.