it is D on my point of veiw..

Answer:
Yes, you can structures it within roots
Explanation:

Answer:
The answer is A) derived from the nematocysts of its prey.
Explanation:
Sea stars mostly eat cnidarians (mollusks) which can contain a large number of nematocysts in their bodies. Therefore it would be possible that this toxin is absorbed from the prey.
Answer:
D) The smoke would settle around cities, reducing visibility.