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: If Mona is comparing the erosion rates of two rocks and she notices that granite is softer then marble, which rock will water erode slower? 
 Answer: marble
[A]: The water erodes the softer rock faster than the harder rock.


[Q]: Question: Eileen studied two identically sized populations of women, one in Springfield where the women were in their 50s and one in Mayfield where the women were in their 30s. The population with a lower incidence of breast cancer was 
 Answer: Mayfield group.
[A]: Breast cancer is rare in teens. It becomes more common as women get older.


[Q]: Question: When we close a camera shutter early what happens to the light absorbed? 
 Answer: decreased
[A]:
The longer the exposure, the more light that the telescope can gather to make the image.