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.

[Q]: Question: Mike is trying to make two different things slide across the ground. One is block, the other is a chair. The thing that will be hardest to push has 
 Answer: more mass
[A]: Its harder to overcome friction between heavier objects and the floor than it is between lighter objects and the floor.


[Q]: Question: A piece of glass has _____ friction than a piece of sandpaper. 
 Answer: less
[A]: Rougher surfaces have more friction between them than smoother surfaces.


[Q]: Question: Terry replaces cut down trees in the forest. The air is now _____ dry. 
 Answer: less
[A]:
With fewer trees, the air is drier and droughts are more common.