- 1. True or false. Ecosystems change over time.
A) True
B) False
- 2. True or false. Changes to an ecosystem are always bad.
A) False
B) True
- 3. The first organisms that appear in an area are called ____________ species.
A) pioneer
B) immigrant
C) lasting
- 4. What are introduced species?
A) Organisms brought into an area where they weren't naturally found.
B) Organisms that have always been in an area.
- 5. Look at the picture of the oil spill on p. 190. Cleaning up oil spills must be done __________ so it doesn't hurt the ecosystem.
A) quickly
B) slowly
- 6. Look at the pictures on p. 191. Recycling aluminum cans saves ______ percent of the energy needed to produce aluminum.
A) 90
B) 95
C) 82
D) 65
- 7. When land is cleared away for houses and shopping malls, how are organisms affected?
- 8. How do factories pollute the air?
- 9. What is one way that a blizzard that drops two feet of snow on an area might affect an ecosystem?
- 10. How can you, personally, help to save ecosystems?
A) a series of card tricks.
B) a series of predicable ways to fix problems.
C) a series of predictable changes that occur over time.
- 12. Look on pg. 187. What is the name of one of the first plants to grow after a volcano erupts?
A) roses
B) pink flower
C) fireweed
- 13. Look on pg. 186. When Mount St. Helens erupted, how far into the sky did ash and smoke rise up?
A) 24 kilometers
B) 18 kilometers
C) 100 kilometers
- 14. Look at the map on pg. 188. About how many years before the landfills in Michigan are full?
A) 5-10 years
B) more than 10 years
C) less than 5 years
- 15. Look at the map on pg. 188. About how many years before the landfills in Texas are full?
A) 5-10 years
B) less than 5 years
C) more than 10 years
- 16. True or false. When land is cleared to create stores, houses, and shopping malls, the animals that live there have their habitat destroyed.
A) False
B) True
- 17. How do factories pollute the air?
A) By cleaning the air around the factories
B) By releasing harmful gases
C) Factories do not pollute the air
- 18. Look at the picture on pg. 190 of the workers cleaning up the oil spill. Where did this oil spill occur that the workers are cleaning?
A) Idaho
B) Alaska
C) New Mexico
- 19. Look on pg. 191. What are tires made from?
A) fossil fuels
B) stones
C) minerals
- 20. True or false. Recycling is good for the environment.
A) False
B) True
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