1. LINGO

2. all of the individuals of one species occupying a particular area

3. consists of fine particles such as dust, pollen, mold, ash and soot that are in the air.

4. a colorless, odorless gas found in car exhaust that contributes to air pollution and makes people ill.

5. the largest number of individuals of a particular species that the environment can support

6. substances that contaminate the environment.

7. Acidic moisture that falls to earth in the form of rain or snow.

8. scale used to measure how acidic or basic something is

9. the careful use of earth materials to reduce damage to the environment.

10. piling yard wastes where they can decompose gradually

11. substances with a pH lower than 7

12. using materials again

13. substances with a pH above 7

14. the clearing of forested land for agriculture, grazing, development, or logging

15. warm air traps cool air near the ground. This reduces the capacity of the atmosphere to mix materials

16. the hazy, yellowish brown blanket of smog that is sometimes found over cities – forms with the help of sunlight

17. the volume of water flowing past a point per unit of time. Increases when more water enters it’s channel

18. an area where each day’s garbage is deposited and covered with soil

19. Substance that contains human waste, household detergents and soaps

20. chemicals that help plants grow

21. wastes that are poisonous, cause cancer, or that can catch fire easily

22. pollution that enters water from a specific location such as a drainpipe or ditch

23. substances that destroy pests, to keep insects and weeds from destroying crops and lawns

24. pollution that enters a body of water from a large area, such as lawns, construction sights and roads

25. loose material, such as rock fragments and mineral grains, that is moved by erosion

26. Review Basketball!

27. Paving land _____ stream discharge Decreases Increases Prevents Does not affect

28. _____ are substances that contaminate the environment. Enzymes Fossil fuels Pollutants Stream discharges

29. Population explosion refers to the _____ Estimated world population in 2025 Number of people who live in poverty World population in 1810 Increased rate at which the population is growing

30. One cause of population explosion is _____ Air pollution Poor nutrition Better nutrition Cutting trees

31. A land use that does NOT cause environmental problems is _____ Grazing livestock Using herbicides Setting aside natural preserves Cutting trees

32. Recycling materials helps save _____ Energy Landfill space Both Neither

33. A growing population puts demands on the land for _____ Food Living space Landfills for trash All of the above

34. Composting means piling up grass and leaves so they can be _____ Collected with garbage Collected separately from garbage Allowed to gradually decompose Used for cattle food

35. People can help protect the environment by _____ Reusing Recycling Composting All of the above

36. Earth’s population is rapidly increasing because of all of the following EXCEPT: Modern medicine Rate of reproduction has decreased Better sanitation Better nutrition

37. _____ makes up 40% of the mass of trash. Compost Food Paper Aluminum cans

38. A combination of smoke and fog is _____ Oxygen Acid rain Fossil fuels Smog

39. Smog development is affected naturally by _____. The pH scale The greenhouse effect Landforms All of the above

40. Sunlight reacts with waste gases to form _____. Carbon dioxide Ultraviolet radiation Ozone None of the above

41. A cause of acid rain is _____ The exhaust from cars Emissions from coal burning power plants Moisture in the air All of the above

42. Mountains may contribute to smog formation by _____ Emitting sulfurous compounds Blocking clouds Blocking air circulation Limiting water runoff

43. Water pollutants include: Pesticides Fertilizers Sediment All of the above

44. Farms pollute water through the use of _____ Pesticides and fertilizers Hospital waste CFC’s All of the above