Answer:
Cnidarians represent a more complex level of organization than Porifera. They possess outer and inner tissue layers that sandwich a noncellular mesoglea. Cnidarians possess a well-formed digestive system and carry out extracellular digestion.
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B. Lysosomes. Please rat my response and have a nice day!
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Answer:</h2>
<u>Negative Feedback</u> occurs the the response serves to counteract the stimulus.
