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작성자 Sherrill
댓글 0건 조회 8회 작성일 24-06-17 00:55

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Damage to air sacs can reduce the surface area available for gas exchange, impair the thinness of the membrane needed for diffusion, or best cocaine dealer in US disrupt the flow of air
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How many meters is the human digestive tract?

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The human digestive tract is approximately 6-9 meters long.

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