Earthworms(annelids) are segmented worms that breathe using...

Annelids circulate blood using a ____________ system...

Insects circulate blood using a _____________ system...

Annelids are _________________, meaning they produce both sperm and eggs...

Earthworms and mammals both have...

Which organism eliminates wastes using many pairs of organs called nephridia?

Grasshoppers use ____________ to move oxygen from the spiracle to the body cells.

What is the name of the insect excretory organ similar to our kidneys?

While adult frogs breathe using lungs, juvenile tadpoles breathe through their...

Which describes the advantage of complete metamorphosis in frogs?

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