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Name ______________________________ Class ___________________ Date __________________
Skills Worksheet
Chapter 6, Section 1 Review
Environmental Problems
USING KEY TERMS
The statements below are false. For each statement, replace the underlined term to
make a true statement.
1. Coal is a renewable resource.
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2. Overpopulation is the number and variety of organisms in an area.
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UNDERSTANDING KEY IDEAS
_____ 3. Which of the following can cause pollution?
a. noise
b. garbage
c. chemicals
d. All of the above
_____ 4. Pollution
a. does not affect humans.
b. can make humans sick.
c. makes humans sick only after many years.
d. None of the above
5. Compare renewable and nonrenewable resources.
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6. Why has human population growth increased?
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Original content Copyright © by Holt, Rinehart and Winston; a Division of Houghton Mifflin Harcourt Publishing Company.
Additions and changes to the original content are the responsibility of the instructor.
Holt Science and Technology
24
Environmental Problems and Solutions
Name ______________________________ Class ___________________ Date __________________
Section Review continued
7. What is an exotic species?
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8. How does habitat destruction affect biodiversity?
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MATH SKILLS
9. Jodi’s family produces 48 kg of garbage each week. What is the percentage
decrease if they reduce the amount of garbage to 40 kg per week? Show your
work below.
CRITICAL THINKING
10. Applying Concepts Explain how each of the following technologies can help
people but can also harm the environment due to unintended consequences:
fertilizers, pesticides, and old refrigerators.
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11. Making Inferences Explain how human population growth is related to
pollution problems.
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12. Predicting Consequences Describe how reducing habitat destruction is
important in maintaining biodiversity.
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_______________________________________________________________
_______________________________________________________________
Original content Copyright © by Holt, Rinehart and Winston; a Division of Houghton Mifflin Harcourt Publishing Company.
Additions and changes to the original content are the responsibility of the instructor.
Holt Science and Technology
25
Environmental Problems and Solutions
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