Answers

2015-01-10T11:16:44+05:30
Pollution means surroundings are dirty and harmful so we need to start to  grow trees and start eradicating this problem
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2015-01-10T11:32:58+05:30

An increase in the number of people that reside in a country, state, county, or city. To determine whether there has been population growth, the following formula is used: (birth rate + immigration) - (death rate emigration).



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