earthworms have a(n) , birds have a(n) , and spiders have a(n) .

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Earthworms have a(n) , birds have a(n) , and spiders have a(n) .

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  1. Answer:

    Earthworms have hydroskeleton because their rigid bodies are based on water pressure so it’s hydro then. Endo is found in animals like birds and also humans who have it inside. Exo is found in spiders because they are bugs and bugs have skeletons like a shell that covers them.