In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

Ex Input:
Question: Eric rubs together tissue paper and then sandpaper. The rougher tissue paper has _____ friction than the sandpaper. 
 Answer: more

Ex Output:
Rougher surfaces have more friction between them than smoother surfaces.


Ex Input:
Question: Compared to a hydrocarbon with a single carbon atom, would a hydrocarbon with 10 carbon atoms have 
 Answer: a greater number of isomers

Ex Output:
The more carbon atoms a hydrocarbon has, the greater the number of isomers.


Ex Input:
Question: When everyone in a country can afford a car do they use more or less energy? 
 Answer: more

Ex Output:

People in the richer nations of the world use far more energy, especially energy from fossil fuels, than people in the poorer nations do.