Kellbell42
Kellbell42
20-04-2017
Biology
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Gas exchange takes place in the
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ItsKDelacruz
ItsKDelacruz
20-04-2017
gas exchangeis the delivery of oxygen, so im guessing it takes place in the bloodstream
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nadiazindani01
nadiazindani01
21-04-2017
Lungs for human and gills for aquatic animals
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