Other animals, such as earthworms and amphibians, use their skin (integument) as a respiratory organ. A dense network of capillaries lies just below the skin, facilitating gas exchange between the external environment and the circulatory system.
Frogs have lungs, cockroaches have trachea, while fishes have gills for respiration. Earthworms don't have special organs for respiration, instead, they breathe through their skin. This type of respiration is known as cutaneous respiration.
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Answer:
Skin and Gills
Other animals, such as earthworms and amphibians, use their skin (integument) as a respiratory organ. A dense network of capillaries lies just below the skin, facilitating gas exchange between the external environment and the circulatory system.
Answer:
Frogs have lungs, cockroaches have trachea, while fishes have gills for respiration. Earthworms don't have special organs for respiration, instead, they breathe through their skin. This type of respiration is known as cutaneous respiration.