The challenge of meeting needs and a kind of contest among populations is called A : competition

B : symbiosis

C : community

D : adaptation

competition

Explanation:

in june, we will have been married for eighteen months. (i am assuming this is what you want? the sentence, as you have presented it, is grammatically incorrect--   you want it corrected, yes? )

the author develops a cold, and scared tone. making the reader shudder with fear, and suddenly become cold. i'm guessing that he's writing a scary novel, or maybe about a chilly december night.