B2 2020 Skinner

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Across
  1. 3. A natural resource that can be replaced at the same rate at which the resource is consumed
  2. 4. trash that is left on earth and in the atmosphere
  3. 7. keeps layer that helps protect us from UV rays
  4. 9. one way of increasing carbon dioxide
  5. 10. the process of carbon naturally interchanging between the lithosphere, biosphere,hydrosphere, and atmosphere
  6. 12. gases that keep heat from the sun in
  7. 14. Concentration of trace substances such as carbon monoxide, sulfur oxide, hydrocarbons, and solid particulates, at a greater level than occurs in average air.
  8. 15. a gas that contributes to the greenhouse effect by absorbing infrared radiation, e.g., carbon dioxide and chlorofluorocarbons.
  9. 18. is used by electrical heaters, cookers for cooking food, short-range communications like remote controls, optical fibres, security systems and thermal imaging cameras which detect people in the dark. The heating effect of IR can cause burns to the skin.
  10. 19. were most weather occurs
  11. 20. is emitted during agricultural and industrial activities
  12. 21. the most abundant gas in the atmosphere
  13. 23. Rain containing acids that form in the atmosphere when industrial gas emissions (especially sulfur dioxide and nitrogen oxides) combine with water.
  14. 24. the envelope of gases surrounding the earth or another planet.
  15. 25. were meteoroids burn up
Down
  1. 1. the hottest layer of the atmosphere
  2. 2. produced during the burning of fossil fuels
  3. 5. produced during photosynthesis
  4. 6. keeps our planet the perfect temperature
  5. 8. The addition of any substance that has a negative affect on water or the living things that depend on the water.
  6. 11. Any significant change in measures of climate, such as temperature, precipitation, or wind, lasting for an extended period of a decade or longer.
  7. 13. sometimes used as substitutes for stratospheric ozone-depleting substances (e.g., chlorofluorocarbons, hydrochlorofluorocarbons, and halons). These gases are typically emitted in smaller quantities, but because they are potent greenhouse gases
  8. 16. best science teacher
  9. 17. is emitted during the production and transport of coal
  10. 22. where normal pilots fly