PT158.S3.Q6 > Analytics

SECTION 1 · rc

PASSAGE 1

Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7

PASSAGE 2

Question 8 Question 9 Question 10 Question 11 Question 12 Question 13

PASSAGE 3

Question 14 Question 15 Question 16 Question 17 Question 18 Question 19 Question 20

PASSAGE 4

Question 21 Question 22 Question 23 Question 24 Question 25 Question 26 Question 27

SECTION 2 · lr

Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7 Question 8 Question 9 Question 10 Question 11 Question 12 Question 13 Question 14 Question 15 Question 16 Question 17 Question 18 Question 19 Question 20 Question 21 Question 22 Question 23 Question 24 Question 25

SECTION 3 · lr

SECTION 4 · lr

Why are pollution levels in Crystal Bay highest shortly after a heavy rainfall, even though rainwater doesn’t contain pollution, so we would expect rainwater to dilute the polluted seawater?

The correct answer should tell us something about heavy rainfall that might lead to an overall increase in pollution, even if the water in rainwater doesn’t contain pollution.

This would lead us to expect rainfall to leave pollution levels unchanged. But we’re trying to explain why there’s an increase in pollution levels after rainfall.

This suggests that, although the rainwater itself doesn’t contain pollution, it can carry or otherwise bring pollution (pesticides) into the bay. This can help explain why pollution levels increase shortly after heavy rainfall.

We have no reason to think rainwater from evaporation is particularly pollution-heavy compared to other kinds of rainwater. And, we know that rainwater is “almost totally pure.” So, we’d still expect rainfall not to increase pollution levels.

There may be other, more significant sources of pollution, such as beachgoers’ trash. But we don’t have any reason to think beachgoing increases or the amount of trash left increases after heavy rainfall. So, we still wouldn’t expect pollution levels to be highest after rain.

Even if other areas experience higher pollution levels after rainfall, that doesn’t explain why this pattern occurs in Crystal Bay. We’re still left without any reason to think the pollution levels would increase after heavy rain.

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93% of people who answer get this correct

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135

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93%

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145

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PrepTest 158 - Section 3 - Question 6

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