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Name: mark
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How do earthworms breathe?

Earthworms rely on their moist bodies for oxygen to diffuse into the blood circulating near the surface of their skin. The reason that earthworms come to the surface when the ground is water saturated is because it needs the air circulating in the soil to diffuse enough oxygen into their blood.

Steve Sample

Earthworms do not have a respiratory system such as we have. They have very thin skin and can exchange oxygen and CO2 through their skin.

Van Hoeck

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