I noticed that road construction workers heat a black material (tar) for repairing a road.I wants to know whether the change caused in tar,by heating,can be reversed?
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I noticed that road construction workers heat a black material (tar) for repairing a road.I wants to know whether the change caused in tar,by heating,can be reversed?
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Answer:
yed
Explanation:
I have seen that in China their is a road construction machine to construct a road