I don’t understand the question but if I can make a correct inference, they have thorns to protect themselves from predators.
What’s the rest of the question
Answer:
1st option, 2nd option, and third option.
Explanation:
Did this problem and got it right with these answers! :)
Ocean waters has its own level of density which depends of the climate, temperature and most of all the location where it came from. The more the ocean water absorbs heat the more its density as a result it rises above from cold to hot. So the the water from the Antarctica usually is less dense and then become more dense when it goes to the equator which is more hot.
Some codons are sup pressed, so they do not appear to be producing any proteins. These amino acids may be part of such codons.