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What factor/s allowed the fast growth of the human population during the 20th century:

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What was the contribution of the green revolution to population growth?

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Human population regulation is:

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Environmental refugees are:

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The authors of the article:

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The american ecologist Herman Daly uses the term "empty world" and "full world" in order to:

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thermal comfort is defined as:

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definition of smog is?

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how many mass extiction events occurred in the past?

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n the species-area relationship curve, high 'Z' values (e.g,0.6) reflects the sampling of species in:

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