The earthworm is a terrestrial animal that uses its ________ in respiration.

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Earthworms breathe through their moistened body surface, which allows oxygen to diffuse across the skin and into their circulatory system. They do not have specialized respiratory structures such as gills, tracheoles, or lungs. Parapodia are appendages found in marine organisms such as polychaete worms that are used for respiration and movement.

The Earthworm Is a Terrestrial Animal That Uses Its ________