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.

[EX Q]: Question: Mona lives in a country with a lot of food available. If a natural disaster strikes and the food supply is cut off, what will happen to the birth rate in her country?
Answer: decrease
[EX A]: Low food supply or a lack of space can lower birth rates, increase death rates, or lead to emigration.

[EX Q]: Question: Noah compares the density of the water in a pond during a hot July day and a cold winter morning. The water on the July day is
Answer: less dense.
[EX A]: Lower temperature and higher salinity yield the densest water.

[EX Q]: Question: Milo is trying to heat his room with a space heater. If he turns up the thermostat to a hotter setting, which is happening to the energy the heater is producing?
Answer: increasing
[EX A]:
Bigger stars produce more energy, so their surfaces are hotter.