Ok so basically this is not a very cash money question *DABS*
Explanation:
Echinoderms belong to a very diverse phylum of marine-dwelling invertebrates, which have integral roles in salt water aquatic ecosystems. They comprise brittle stars, starfish, sea-urchins, sand dollars, and sea cucumbers. They have distinct characteristics, they:
- are only marine animals.
- show bilateral symmetry as larvae, and radial symmetry as adults
- show three layers (germ)
- show complex-level organisation, i.e. organs are seen
- have a fluid-filled body cavity
Learn more about other phyla at brainly.com/question/9504034
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Answer:
THE MAIN BELT Plants in the Blackland Prairie include bluestem grass, Indian grass, many other tall grasses, and trees. There are bacteria in the soil and algae in the ponds. All of these biotic factors of the Blackland Prairie depend on one another to live.
This is one I did
A cladogram just splits up things by characteristics I'm not to sure if its 100 percent right but hopefully will get you on the right tracks
hope it helps
<span>Aneurysm.
An aneurysm occurs when part of an artery wall weakens, allowing it to widen abnormally or bulge out. The causes of aneurysms are sometimes unknown. Some may be congenital, meaning a person is born with them. An aneurysm may also occur as the result of aortic disease or an injury.</span>
