Answer:
Radio waves were first developed in WWII
Explanation:
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Environmental contingency plan is important to lessen or even prevent casualties or damage to infrastructures when unexpected environmental disasters happen. This is a common management strategy to lessen the costs of the company in the future. More importantly, it is used for safety purposes.
Sorry, haven't came across that as of yet.
Answer:
The molecular weight of the compound is decreasing
Explanation:
