Answer:
D is incorrect. Took the quiz. The most acceptable answer is either A or C
Sponges have specialized cells and an endoskeleton, but they lack tissues and body symmetry. ... They include jellyfish and corals, both of which have radial symmetry. All cnidarians have nematocysts, and many are bioluminescent. They may exist in medusa and/or polyp form.
D. Myosin and actin do not fully detach, so the muscle cannot relax.
Answer:
creation of a burning chamber which will suppress the chemicals released into a usable form.
Explanation:
hope it helps .
