Answer:
True
Explanation:
True.
Recycling of metal means that there is a reduction in the cost of fuel, since much lesser metal ore would have to be mined and eventually transported. Recycling of metal also means saving of energy since we won't be mining ores from the beginning all over again, as compared. There is lesser number of quarries needed as well.
Answer:
1-C
2-A
3-F
4-B
5-D
6-E
Explanation:
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Answer:
It is none. Echo is formed when sound waves hit a hard surface.
Explanation:
b) The reactivity of alkali metals increases as atomic mass increases.