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.

Q: Question: Chris is studying Lake Michigan. He takes soil samples from the Lake in two places. The first sample he takes from right near the shore. The second sample is taken from the middle of the lake. The _____ sample will have greater dissolved nutrients in it. 
 Answer: first

A: Water near shore generally has more dissolved nutrients than water farther from shore.
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Q: Question: Dana washes her hands a lot, so her bacteria has mutated to help to resist antibiotics. As that bacteria decreases in numbers, the mutation becomes 
 Answer: rare

A: Bacteria with a mutation the helps resist antibiotics increase in numbers, so the mutation becomes more common.
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Q: Question: John was observing the patient. He saw that as less light was let in, the pupil would get 
 Answer: smaller.

A:
The pupil automatically gets bigger or smaller to let more or less light in as needed.
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