Question

platyhelminthes circulatory system is open or closed
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Answer 1

Answer:

Platyhelminthes might be a weird sounding word, but it is the name of a phylum in the animal kingdom. A phylum is the second least specific classification in taxonomy or the classification of living things. Platyhelminthes are the flatworms, animals that are rather simple in scope but much more complex than some of the phyla that existed before them.

Explanation:

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