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.
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Question: Question: When there are a lot of people in one area they need 
 Answer: many resources

Answer: More people need more resources.


Question: Question: If the population of Mona's city has been growing recently and there are more people living there this year compared to last year, what happens to the need for resources? 
 Answer: increased need

Answer: More people need more resources.


Question: Question: Jim has never been a smoker. If he suddenly starts smoking cigarettes the amount of oxygen available in his lungs 
 Answer: decreases

Answer:
Smoking reduces the amount of oxygen available for diffusion at the lungs, so less oxygen gets absorbed and blood is oxygenated to a lesser degree.