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2017-07-05	mgrajapt	71	Check this topic
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2016-09-12	mgrajapt	80	Check this topic
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2018-08-24	mahsa92	80	Check this topic
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2017-05-08	mahabub	50	Check this topic

Topic title: Population ChangesPopulations of living beings are constantly changing. The number of humans, animals, insects, or plants living in a given area can vary because of two kinds of factors: biotic and abiotic. Biotic factors are living factors that can influ

Topic category: Q4