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 Q]: Question: Marie is rolling cards down a hill. She wants to know which cart will get to the bottom of the hill slower, an empty cart, or a full cart? The cart that will finish first will have a mass that is 
 Answer: lower
[EX A]: An object has greater momentum if it has greater mass, greater velocity, or both.

[EX Q]: Question: If an animal is able to eat food easier is it more or less likely to reproduce? 
 Answer: more
[EX A]: Natural selection is the process by which living things with beneficial traits produce more offspring, so their traits become more common over time.

[EX Q]: Question: John was checking the temperature of the unit. He saw that as the temperature increased when the level of energy was 
 Answer: Greater
[EX A]:
The temperature of matter increases with the added energy.