The main thing living there is the coral. The coral is a living organism. There are also many tropical fish and sea turtles and there is even a starfish that eats the coral.
coral reef
Food chain.
They could have slight OCD.
D.O. is what or whom I.O. is to whom or for whom
Give the letter to Mary. to whom?The letter is for Mary. for whom?
whom
It is spelt "whom". It is the objective form of "who".
The indirect object in a sentence tells to whom or for whom the action is being done. It usually answers the question "to whom" or "for whom." For example, in the sentence "I gave her a book," "her" is the indirect object indicating to whom the action of giving is done.
Yes, "whom" can be the object of a preposition (for whom, with whom, of whom, etc.).
To whom it may concern Who is a subject pronoun; it is used as the subject of a verb. Whom is an object pronoun. If you find you can replace who/whom with he, she, or they, who is correct. If you find you've replaced who/whom with him, her, or them, then whom is correct.
with whom
Con quien means "with whom"