Answer:
Explanation:
Echinoderms are marine organisms which means they live in the ocean. They are found in all marine waters on Earth although there are few species living in the Arctic. Many echinoderms are visible on the seashore such as sand dollars, globular spiny sea urchins and asteroids.
Increase
Decrease
Stays the same
Stays the same
Answer:
The answer is due to oxygen deficiency
Hope this helps you.
Endorphins sound correct.
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