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

question:
Question: Mona is building a circuit. If she subtracts resistors in parallel what happens to the total resistance of the circuit?
Answer: increase
answer:
When we add resistors in parallel to each other the total resistance decreases and the current increases.

question:
Question: When we lower the temperature of water it becomes
Answer: more dense
answer:
When a volume of water is cooled, the molecules move less vigorously, so same number of molecules takes up less space and the water is denser.