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 Jim is playing with some objects and moving them around and he moves them farther apart, the gravitational force between them 
 Answer: decreases

A: The closer objects are to each other, the stronger the gravitational force between them.
****
Q: Question: John was observing a range of patients skin under a microscope. He noticed that the more melanocytes the skin had, the production of melanin was 
 Answer: higher

A: However, the melanocytes of people with darker skin produce more melanin.
****
Q: Question: Ryan noticed that a popular solar panel is _____ expensive than it was. 
 Answer: less

A:
Solar power is expensive, but as demand increases technology improves and costs decrease.
****