Friday, 29 November 2013

Earthworm

I find the earthworm interesting because it's interesting how a small organism can have a heart. Even though, it's not a heart like ours, they have five rings as hearts which helps nutrients go through the body. 


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1 comment:

  1. Unknown4 January 2014 at 21:14

    This is the first invertebrate you see a closed circulatory system.

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