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: When we lower the temperature of water it becomes 
 Answer: more dense
Example Output: 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.

Example Input: Question: A city will grow larger when the number of people who are there 
 Answer: grows
Example Output: More people also means more clearing of land for agriculture and development.

Example Input: Question: Jim, the manager of the new nuclear energy plant, realized that the energy cost of running the plant was rising. This means that the rate that the resource will be used will 
 Answer: increase
Example Output:
If the energy cost of obtaining energy increases, the resource will be used even faster.