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: 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
[EX A]: More people need more resources.

[EX Q]: Question: If Mary is taking a picture and she shuts the camera shutter narrower what will happen to the amount of light that gets in? 
 Answer: decrease
[EX A]: A camera shutter stays open longer in dim light to let more light in.

[EX Q]: Question: If Mona is comparing fossils she found in very old rocks to fossils she found in newer rocks. Which fossils does she expect to be less similar to living animals? 
 Answer: old rocks
[EX A]:
In general, fossils in older rocks are less similar to modern organisms.