Asked by Clary

Hello! I'm having trouble with this question on my study guide about the phylum of echinoderms:

The individual calcareous elements that compose the water vascular system in echinoderms are ____.

I know that ossicles are made of calcium but they are a part of the echinoderm endoskeleton, and I don't think they are apart of the water vascular system. I have looked on google, but I have been unable to find anything helpful. Does anyone have an idea what this might be or where else I should look? Thank you :)

Answers

Answered by Writeacher
Clearly, no one here knows! So here's my best suggestion for you:

Go to https://www.khanacademy.org/ and click on Courses in the top left corner. Find the course you need help with, and then choose which topic within that course's listings.

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