Biology homework!

Ok, I have to look on the internet for some facts on earthworms. But I can’ t find these 3 things. 1.how do they make or consume energy? 2.how can they maintain their internal balance & keep from getting sick? 3.has earthworms changed in the last 4.6 billion years?what is the common ancestor? I would really be happy if you could help me with these questions.

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Answer #1

Here’s a site with the “bare” facts…

http://www.urbanext.uiuc.edu/worms/facts/

This one is more complex…and probably has more of the answers you need.

http://en.wikipedia.org/wiki/Earthworms

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