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.

Question: An increase in birth rates indicates a/an _____ in the food supply. 
 Answer: increase
Low food supply or a lack of space can lower birth rates, increase death rates, or lead to emigration.

Question: Alan has a rubber band on his hands. He pulls his hands apart and the rubber bands force 
 Answer: increases
The farther apart you move your hands, the stronger the force of the rubber band pulling your hands together.

Question: If Milo is growing a certain type of bacteria that can resist antibiotics and he increases the amount of bacteria he is growing, would mutations in the bacteria 
 Answer: increase

Bacteria with a mutation the helps resist antibiotics increase in numbers, so the mutation becomes more common.