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

Question: A cold object indicates its particles are going 
 Answer: slow
When particles move more slowly, temperature is lower and an object feels cooler.

Question: A young female is _____ likely to acquire breast cancer than an older female. 
 Answer: less

Breast cancer is rare in teens but becomes more common as females get older.