One adaptation that is unique to marine mammals is they nurse their young.. The correct option among all the options that are given in the question is the fourth option or the last option or option "d". I hope that this is the answer that you were looking for and the answer has come to your desired help.
An organism can "make a living" and survive in its niche.
Answer: Because Isabel, where she lives, is salt water which contains salt.
Explanation:
