Q5 of 47 Page 491

List any two sources which add greenhouse gases to the environment.

Two sources are burning of fossil fuels and exhausts from automobiles. Both produce carbon dioxide gas which is a major greenhouse gas.


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State what happened when the “Chipko Movement” spread across communities and media.

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“Reuse is an important step in saving environment”. Justify.

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How does mining cause pollution?

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Every one of us can do something to reduce our consumption of various natural resources. List four such activities based on 3-R’s approach.