I've actually learned something similar recently so your best bet is to go with B.
Answer:
It should be macromolecule :)
Explanation:
False. <span>Adult corals are sessile organisms, i.e. they don't move around. They are tiny organisms whose shells are what we generally see.</span>
Answer:
The caudal fin, or tail fin, is the main fin used to move the fish forward in the water, while the dorsal fins help the fish balance and keep it from rolling over. The paired fins help with steering and hovering.
Explanation:
