Answer:
hola amigo putatatatattatatatudhwywjv
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.
Answer:
NK cells<em><u> perform all of these roles</u></em>
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hope this helps
-lvr
What was the investigation? But from my best guess I'm assuming it's the second option. This may be incorrect.
