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2019-10-30	mariem	3	Check this topic
2019-10-30	mariem	3	Check this topic
2019-10-30	mariem	73	Check this topic

Topic title: In animals and humans, genes determine the general size and shape of the organism, but there may also be variation in physical characteristics due to environmental influences. All organisms function most efficiently under certain environmental conditions;

Topic category: Integrated TOEFL Writing