1. HUMAN IMPACT on the BIOSPHERE Chapter 6-4 Charting a course for the Future http://www.claybennett.com/pages2/mistletoe.html

2. ENVIRONMENTAL PROBLEMS ___________________ ___________________ http://www.acmecompany.com/stock_thumbnails/13808.greenhouse_effect_2.jpg

3. DEAD ZONES When an ecosystem receives a LARGE input of limiting nutrient (ie., fertilizer runoff) the population increases dramatically = ___________ REMEMBER !

4. Our atmosphere between 20-50 km contains high concentrations of ____________ which protect us from the sun’s harmful ______________ radiation. OZONE LAYER http://pubweb.bnl.gov/users/xujun/www/bnl/ozone_layer_1.gif http://www.planetguide.net/book/chapter_5/ozone_layer.html

5. EFFECTS OF UV RADIATION Click here to see a movie about the effects of UV radiation WMV, 618K __________________________________ ________________________ of skin __________________________________ Reduces ________________ Disrupts __________________ in oceans

6. What’s the cause of Ozone Depletion? Chlorofluorocarbon molecules _______ released from air conditioners, aerosol spray cans, fire extinguishers, and industry ________________ http://www.atm.ch.cam.ac.uk/tour/part3.html

7. HOW DO WE HELP? 1987- the _______________________ committed signing nations (including USA) to a ____________ in the use of CFCs and other ozone-depleting substances. CFC production was _________ after 1995 in the developed countries, and later in developing countries. Today, over 180 countries have ratified the treaty. OZONE DEPLETION

8. _____________spray cans no longer contain CFC propellants. Gases in ___________________ and _____________ are collected and recycled. THAT’S WHY... http://www.roundrocktexas.gov/images/spray_cans_large.jpg

9. Emissions to Atmosphere Nitrogen oxides Sulfur dioxide Chemical Transformation Nitric acid Sulfuric acid Precipitation Acid rain, fog, snow, and mist Dry Fallout Condensation particulates, gases IndustryTransportationOre smeltingPower generation ACID RAIN What’s the cause?________________________ Releases _______________ and ________________ into the atmosphere that react with water to produce ACID RAIN.

10. ACID RAIN EFFECTS damages buildings and statues damages forests kills fish reduces biodiversity causes illness & premature death from heart & lung disorders like asthma and bronchitis

11. HOW DO WE HELP? Develop a National energy policy that emphasizes use of alternative renewable energy sources Cut down on activities that use fossil fuels conserve electricity drive less Drive automobiles with increased fuel efficiency OR run on alternative fuels ACID RAIN Recycle (uses less energy than starting from scratch)

12. GREENHOUSE EFFECT Temperatures of Earth remain within a range ______________ because the _____________ acts as a natural _________________ blanket. http://wwwstatic.bayareawritingproject.org/images/bawp41/earthAtmosphereIMG.gif

13. GREENHOUSE EFFECT Atmospheric gases such as ___________________ NORMALLY trap heat energy from the sun like a greenhouse = _____________________ http://www.acmecompany.com/stock_thumbnails/13808.greenhouse_effect_2.jpg

14. WHAT’S the CAUSE? _________________ solid waste, ________ ________ (oil, natural gas, and coal), wood and wood products Production and transport of fossil fuels __________________ of organic wastes in landfills Animal sources (_______________) ________________________ (trees ________________ CO 2 from atmosphere) GLOBAL WARMING

15. What’s so bad about warming up a little? ___________ __________ Cartoon from Brookings Register http://healthandenergy.com/images/global2.gif

16. What’s so bad about warming up a little? http://zfacts.com/metaPage/lib/Atlantic_conveyor.jpg Changes in ____ _______ http://www.claybennett.com/pages/ocean_temps.html

17. What’s so bad about warming up a little? ____________________ http://i.a.cnn.net/cnn/2005/WEATHER/08/25/tropical.storm/story.katrina.915p.jpg http://en.wikipedia.org/wiki/Hurricane_Katrina

18. What’s so bad about warming up a little? ________ Brookings Register http://www.cactus-art.biz/note-book/Dictionary/aaa_Dictionary_pictures/drought.jpg ______________ and __________

19. What’s so bad about warming up a little? Changing _______ means loss of _________ http://www.metro.co.uk/news/article.html?in_article_id=35720&in_page_id=34

20. What’s the Kyoto Accord got to do with it? The Kyoto Accord is an agreement, aimed at reducing global warming that asks participants to __________ their ________________ emissions to a percentage of their 1990 emission levels _____________.

21. HOW DO WE HELP? Cut down on _________ emissions (with or without the Kyoto accord) Develop a National energy policy that emphasizes use of alternative renewable energy sources Cut down on activities that use _______________ Drive automobiles with increased fuel efficiency OR run on alternative fuels GLOBAL WARMING _______________ (uses less energy than starting from scratch) Reduce ___________________ (plants use CO 2 ) Watch your ___________ footprint

22. We Can’t Just Keep Piling it up in Landfills We have to: _____________ Plastic recycling video