1. 9/24/13 Objective: How are humans impacting the environment? Do Now: What is this picture depicting?

2. What is the function of this greenhouse? Sunlight passes through the glass, where the interior absorbs the radiant energy changing it to heat, the glass stops the heat from escaping

3. The Greenhouse Effect

4. Greenhouse gases (CO2, N2, methane, water vapor) trap infrared heat and keep the Earth warm

5. Global Warming Carbon dioxide from the burning of fossil fuels adds too many greenhouse gases, resulting in increases in the Earth’s temperature

6. What is this graph showing?

9. Global Warming

10. Increased probability and intensity of droughts and heat waves

11. Global Warming Melting of the polar ice caps can raise sea levels –Puts more freshwater into the ocean –Can cause endangerment of animals

12. The Ozone Layer The ozone layer: a layer of gases that absorbs radiation from the sun

13. Ozone Depletion The ozone gets depleted (gets holes in it) when cleaners, air conditioners and refrigerators are used and release chemicals called chlorofluorocarbons (CFCs) into the atmosphere.

14. So What? - Without ozone, more UV rays hit earth - Holes in the ozone can lead to higher rates of skin cancer.

15. Endangered Endangered animals are still living today but are in immediate danger of extinction.

16. Threatened A species that is likely to become endangered if it is not protected.

17. Conservation

18. Captive Breeding Programs

19. Preserving Genetic Material

20. Zoos, Aquariums, Parks, Gardens

21. Impact on Water Cycle Pollutants such as fertilizers,, pesticides, oil, sewage Acid rain from sulfur dioxide reacting with water

22. Impact on Carbon Cycle Burning of fossil fuels (oil, gas, coal) Deforestation