TASK DEFINITION: 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.
PROBLEM: 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.

SOLUTION: Breast cancer is rare in teens. It becomes more common as women get older.

PROBLEM: Question: If Mona is studying the galaxy and she notices that the universe is expanding less then it used to, what does that mean is happening to the galaxies in the universe? 
 Answer: moving closer together

SOLUTION: As the Universe expands, galaxies move further and further apart.

PROBLEM: Question: John was watching objects fall from the sky in the simulator. He observed that items with less mass will be pulled by gravity at a rate that is 
 Answer: Weaker

SOLUTION:
Gravity is a pull which all matter exerts on all other matter, the more mass, the stronger the pull.