instruction:
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.
question:
Question: When we get to the bottom of a mountain the air is 
 Answer: more dense
answer:
At higher elevations, there is less air to press on a given area.


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


question:
Question: If a wire were to be doubled in length, it would have _____ resistance than the original length wire. 
 Answer: more
answer:

Longer wires have more resistance than shorter wires.