Question

which adaptive feature keeps it earthworm keeps its skin always moist​

Answer 1

The worm's skin is protected by a thin cuticle and kept moist by a slimy mucus. This lets it absorb the oxygen it needs and expel carbon dioxide. If a worm is dried up by the sun, it will die because the exchange of gases can't take place. ... Air contains more oxygen than water does, and remember, earthworms need oxygen.

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