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 Input:
Question: Tasha is studying birth rates in various countries. She looks at two countries. In South Africa, the food supply is currently higher than in Australia. Because of this, the birth rate in South Africa, compared to Australia, will be
Answer: higher

Ex Output:
Low food supply or a lack of space can lower birth rates, increase death rates, or lead to emigration.

Ex Input:
Question: Dwayne Johnson is weaker than Kevin Hart because he exercises less and therefore his muscles have grown
Answer: smaller.

Ex Output:
Exercising muscles increases their size, and bigger muscles have greater strength.

Ex Input:
Question: Mona lives in a city that doesn't know much about solar power. As the citizens become more aware of solar and the benefits it offers the demand for solar power rises. What happens to the cost of the technology as the demand increases?
Answer: decrease

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