Because it is direct contact of the molecules in the air and the land that are touching.
The big idea to remember is that mitosis is the simple duplication of a cell and all of its parts. It duplicates its DNA and the two new cells (daughter cells) have the same pieces and genetic code. Two identical copies come from one original. Start with one; get two that are the same. You get the idea.
So it is the very last stage!
The correct answer for this question is this one: "d. Anemia reduces the amount of protein reaching body cells and is passed on by airborne viruses." The basis for Mr. Stamos's response is that <em>Anemia reduces the amount of protein reaching body cells and is passed on by airborne viruses. </em>Hope this helps answer your question and have a nice day ahead.
I believe that the other person who answers u is right
Well, pollution is probably the main reason, but i think all of them are reasons why animals are dying off, if there isn't any choice for all of them, then your best bet would be to do a, pollution.