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FISH: Gills
Frogs: In land lungs,in water moist skin
Earthworm: skin
Birds: lungs
Trachea: insects
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1)Humans use lungs.
2)Fish use gills for respiration.
3)Crocodile uses lungs for respiration.
4)Earthworm use skin for respiration.
5)Cockroach use trachea for respiration
6)Crabs use gills for respiration.
7)Frogs use lungs on land and skin in water for respiration.
8)Leech use skin for respiration.

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