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Which characteristic is shared by all mollusks and echinoderms?

live only in salt water

lack a backbone

use tube feet to move

have an open circulatory system

User Dzoki
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2 Answers

9 votes

Answer:

D) have an open circulatory system

Step-by-step explanation:

Hope this helps!

User Kieranroneill
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4 votes

Answer:

have an open circlitory system

Step-by-step explanation:

User Ladji
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