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.

Example Input: Question: If Milo places his coffee into the microwave and cools it off, what will happen to the rate of vibration of the molecules in the drink? 
 Answer: decrease
Example Output: Warmer molecules vibrate faster than cooler ones.

Example Input: Question: What would happen to the atmosphere as Jim climbed higher up a mountain? 
 Answer: it would become less dense
Example Output: The density of the atmosphere decreases with an increase in the height above sea level (altitude).

Example Input: Question: Using a truck instead of carrying things does what to physical labor 
 Answer: Decreases it
Example Output:
Machines make work easier by increasing the amount of force that is applied, increasing the distance over which the force is applied, or changing the direction in which the force is applied.