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Questions by Pavel Katiushyn
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How does human activity affect earth's natural resources?
asked
Mar 12, 2016
Chemistry
middle-school
1
answer
5
votes
177k
views
a man stands on weighing scale in a lift which carries him upwards with acceleration, what happen please tell
asked
Dec 15, 2015
Physics
high-school
1
answer
1
vote
204k
views
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