In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

Question: Ionic bonds between two atoms require one metal and one what? Answer: nonmetal
Ionic bonds between two atoms require one metal and one nonmetal.

Question: Which single most factor is responsible for the extinction of hundreds of species of birds? Answer: human actions
Human actions is responsible for the extinction of hundreds of species of birds.

Question: Amines are classified according to the number of carbon atoms bonded directly to what atom? Answer: nitrogen

Amines are classified according to the number of carbon atoms bonded directly to a(n) nitrogen atom.