The answer is sea stars. Sea stars can then push their stomachs out of the body while inserting it into the prey thus the food is being digested externally. Echinoderms are having 5 or at times multiple of 5 arms. Their shell is made of calcium carbonate.
glycogen for animals
starch for plants
Answer:
Compare and Contrast Environmental Science and Environmentalism. Is it possible to have one without the other?
Answer:
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Explanation: