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: John went to the doctor one day and was told they caught his cancer really early. What does this mean about the ease with which the cancer is treated? 
 Answer: easier to treat

A: The sooner cancer is detected the easier it is to treat.
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Q: Question: When we get to the bottom of a mountain the air is 
 Answer: more dense

A: At higher elevations, there is less air to press on a given area.
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Q: Question: Dave was looking lenses for his new digital camera. He saw on the specifications that the less curved the lens is, the amount of light refracted 
 Answer: decreases

A:
The more curved the surface of a lens is, the more it refracts light.
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