Each of the following sentences has one pronoun; identify it.
For help with this exercise, see chapter 26 of Real Essays 5e.
Example
Each night, the stars fill the skies, but in many large cities, they are impossible to see.
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Light pollution comes from homes, businesses, and streets that are brightly lit at night, and it makes seeing the stars difficult.
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The average night sky has approximately 2,500 stars, but in the United States we can see only a few.
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In many neighborhoods, however, only two or three hundred stars can be spotted, and in a big city, only about a dozen of them can be seen.
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The International Dark Sky Association focuses on reducing light pollution as its main goal and has several recommendations.
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Pointing lights down toward the ground instead of allowing them to shine up toward the sky is one suggestion.
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To help battle light pollution, some cities and towns have passed laws limiting what lights they will allow.
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Experts have been studying the situation, and they have reported that light pollution can affect many things, including wildlife and even human health.
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Migrating birds sometimes fly over brightly lit cities and, confused by the unnatural light, fly in circles until they become exhausted.
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Too much light has also been shown to be harmful to humans, and studies are being done to determine just how this overexposure affects them.
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