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.

Example Input: Question: If Mary is taking a picture and she shuts the camera shutter narrower what will happen to the amount of light that gets in? 
 Answer: decrease
Example Output: A camera shutter stays open longer in dim light to let more light in.

Example Input: Question: Will and Tony are skateboarding and push against each other with force. As the force with they push with decreases, the distance they travel away from each other 
 Answer: decreases
Example Output: When two skateboarders push against each other, it causes them to move apart. The harder they push together, the farther apart they move.

Example Input: Question: What happens to the size of a population if the number of predators for that population is decreased? 
 Answer: gets bigger
Example Output:
An increase in predators, the emergence of a new disease, or the loss of habitat are just three possible problems that will decrease a population.