Population, Resource Use, Population (pages 105-119)

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Across
  1. 4. acid rain can be reversed but it is very _____________ (pg116)
  2. 5. The _______________ level of carbon dioxide is the primary contributor to the rise in global temperatures in the past century (pg 114)
  3. 6. The human population reached 1 _________ by the 1800s. (pg105)
  4. 9. Human populations have fluctuated in the past mostly due to ______________conditions (pg 105)
  5. 10. When the number of humans grow beyond what the available resources can support (pg 109)
  6. 12. Acid rain can also cause metal to rust at a _______________ rate (pg116)
  7. 13. Gases react in the sunlight to produce a form of oxygen called ________________ (pg115)
  8. 15. a roll in decreasing the death rate (pg 106)
  9. 18. Smog can cause _____________ problems and diseases of the eyes and throat (pg115)
  10. 19. ______________ in public health and general living standards
  11. 20. The number of people who die per 1000 individuals is the ______________ rate (pg 106)
  12. 21. IN the ozone layer ______________ is constantly being made and destroyed in a cycle (page 119)
  13. 23. This is used to counter water shortages (pg110)
  14. 24. Air ___________ can be a big problem in areas where there are a lot of factories or people (pg114)
  15. 25. Carbon __________________ forms when fuels such as oil, gas, or wood are burned (pg117)
  16. 28. This forms when certain gases and chemicals react with sunlight. (pg115)
  17. 29. using resources ______________ their amount which is a problem for nonrenewable resources (pg109)
  18. 30. Under certain weather conditions called temperature ________________ the normal circulation of air is blocked (pg115)
  19. 31. Many years ago the main source of air pollution was the smoke being pumped out of ___________ (pg114)
  20. 32. The number of people who are born per 1000 individuals is the birth _____________ (pg106)
  21. 33. Earth provides many resources that humans rely on to live such as energy sources, minerals, water, trees, and ____________ (pg108)
Down
  1. 1. Every human being relies on fresh clean water to _________________ (pg 108)
  2. 2. It is up to individuals governments and international organizations to decide how to manage the imacts of a _____________ population (pg110)
  3. 3. Solar wind hydoelectric and geothermal energy produce only a small fraction of the ___________ emissions that the burning of fossil fuels generates (pg118)
  4. 4. the type of growth that happens very rapidly over time (pg 107)
  5. 7. No single method works in every situation, there are ______________ and costs to each (pg110)
  6. 8. The practice of using less of a resource so that it can last longer (pg110)
  7. 9. One way to reduce emissions is ________________ as well as biking or walking (page 118)
  8. 11. Precipitation that is more acidic than normal because of air pollution (pg116)
  9. 14. in the 1970s scientists discovered an area of sever ozone depletion or a ______________ in the ozone layer (page119)
  10. 15. Air pollution affects weather____________ and the climate can lead to illness and death (page118)
  11. 16. Some all electric vehicles produce _____________ emissions (page118)
  12. 17. Advances in ____________ lead to increased transportation
  13. 20. As the worlds population grows so does our ________________ for resources (pg 108)
  14. 22. Some sources of indoor air pollution include dust, ____________, and pet hair (pg 117)
  15. 26. These often contain carbon dioxide which is a pollutant (pg114)
  16. 27. new farming methods (pg 106)
  17. 29. Populations are limited by space and ________________ (pg 107)