The first day we started to dissect the frog we opened its mouth. We saw that frogs have a lot of stuff in there mouth. The following day we opened until we can see most of it body parts. On the third day I was not at school so I am not sure what we did that day. I am pretty sure we dissected their body parts.
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An amphibian really doesn't have two lives. It lives in the water for the first part of their lives and then they grow lungs. That is why they call it double lives. People like to say that the amphibians have double lives.