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the using of the earth’s resources the control over the waste of the natural materials how to slow down the increase of population how to stop the birth of new babies
city pollution population pollution countryside pollution industry pollution
is expected is expecting has expected will be expected
where after which on which which
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He is the youngest of 8 children in the family and grew up to be an historian. He is expected to address the population problem from a different perspective. His personal experience of large families is the reason why he wants to do research in population. He wants to dedicate his research to his parents.
expects will expect is expected will be expected
350 million 25,000 million 4,000 million 7,000 million
the using of the earth’s resources the control over the waste of the natural materials how to slow down the increase of population how to stop the birth of new babies
city pollution population pollution countryside pollution industry pollution
where which on which after which
the; a the; the a; the a; a
after that since when on which after which
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