Answer:
extinction and change in species competition.
Explanation:
Wood tissue (witch in more detailed stans for shell, bone, and teeth)
I think but I do not know it refered to as being repetitive
Answer: Sea stars move using a water vascular system. Water comes into the system via the madreporite. It is then circulated from the stone canal to the ring canal and into the radial canals.
Explanation: The radial canals carry water to the ampullae and provide suction to the tube feet.
