it divides organelles so don't they run into each other
The answer is D. A is obviously incorrect because they just listed these many different cells that are grouped together. B is incorrect because not only similar cells are grouped together, and they often perform different functions. C is incorrect because the functions are never unrelated, they are usually interdependent with each other.
Answer: i think it's the first one and coexist is not in the dictionary
<span>There are three main types of mutation present for DNA. They are substitution, insertion and deletion. Substitution is the exchange of one base for another. Insertion happens where extra base pairs are inserted. Deletions are mutations where a section of DNA is lost. Therefore, the correct answer is substitution.</span>