Each of the following sentences has one pronoun; identify it.
For help with this exercise, see Chapter 20.
example
People can have a hard time seeing stars at night if they live in or near a big city.
a. People
b. hard
c. they
d. big
Each night, the stars fill the skies, but in many large cities, they are impossible to see.
A. |
B. |
C. |
D. |
Light pollution comes from homes, businesses, and streets that are brightly lit at night, and it makes seeing the stars difficult.
A. |
B. |
C. |
D. |
The average night sky has approximately 2,500 stars, but in the United States we can see only a few.
A. |
B. |
C. |
D. |
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.
A. |
B. |
C. |
D. |
The International Dark Sky Association focuses on reducing light pollution as its main goal and has several recommendations.
A. |
B. |
C. |
D. |
Pointing lights down toward the ground instead of allowing them to shine up toward the sky is one suggestion.
A. |
B. |
C. |
D. |
To help battle light pollution, some cities and towns have passed laws limiting what lights they will allow.
d .pollution
A. |
B. |
C. |
Experts have been studying the situation, and they have reported that light pollution can affect many things, including wildlife and even human health.
A. |
B. |
C. |
D. |
Migrating birds sometimes fly over brightly lit cities and, confused by the unnatural light, fly in circles until they become exhausted.
A. |
B. |
C. |
D. |
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.
A. |
B. |
C. |
D. |