"REVIEW FOR EVALUATION 1 QT2": HTML5 Crossword

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6. What can contaminate the soil through natural events? (7,9)
9. This is a natural cause of air pollution by pollen, spores, mold, etc. (9)
10. What is an effect of air pollution that affects the soil? (4,4)
11. Air pollution is: (13,2,3,3,2,7,10)
12. It is one of the problems of overpopulation. (6,2,9)
14. This is a natural cause of air pollution by fires occurring naturally. (9)
15. This is a human source of air pollution that occurs when people ignite combustibles. (7,6,5)
17. What is the leftover waste after sewage treatment that is sent to landfills? (6)
18. This is a natural cause of air pollution by large amounts of dust or sand carried by the wind. (4,6)
19. This is a human source of air pollution that occurs when people use transportation. (7,9)

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1. Which of the following is a major source of soil pollution? (10,5)
2. Where does waste from the refining of crude oil end up? (5,8)
3. What is household or municipal waste that includes glass, metal, cloth, plastic, wood, and paper? (5,11)
4. What is an example of construction waste? (6)
5. If the population grows, also the production of____________ grows. (5)
7. What elements can cause nuclear contamination in the soil? (11,8)
8. Which of the following activities can lead to air pollution? (7,4)
13. What includes piles of coal and underground debris? (6,5)
16. How can fertilizers or pesticides affect the soil? (4,13)