1. Global Warming, Pollution and Invasive Species… oh my! Don’t write anything in this color!!

2. 4 Types of Diversity Biodiversity Biodiversity variety of all life and living systems variety of all life and living systems Species Diversity Species Diversity variety of different types of species variety of different types of species Genetic Diversity Genetic Diversity variety of genetic material (genes/DNA) in different organisms variety of genetic material (genes/DNA) in different organisms Ecosystem Diversity Ecosystem Diversity variety of habitats, communities ecosystems variety of habitats, communities ecosystems

3. Global Warming Used to describe the increase in the average temperature of the biosphere Used to describe the increase in the average temperature of the biosphere Temperatures between 1980 and 2000 rose at a faster rate than during the past 100 years!! Temperatures between 1980 and 2000 rose at a faster rate than during the past 100 years!! The 1990’s were the hottest decade ever recorded….This decade will probably be even hotter! The 1990’s were the hottest decade ever recorded….This decade will probably be even hotter! Each year of the 90’s was among the top 15 hottest years since 1880 Each year of the 90’s was among the top 15 hottest years since 1880

4. Global Warming Affects on Earth’s Affects on Earth’s ice caps are the most obvious…

5. What Causes Global Warming? Humans have caused global warming by adding carbon dioxide and other greenhouse gases to the atmosphere Humans have caused global warming by adding carbon dioxide and other greenhouse gases to the atmosphere What are greenhouse gases? What are greenhouse gases? heat gets retained in the Earth’s atmosphere by carbon dioxide, methane, water vapor and other gases heat gets retained in the Earth’s atmosphere by carbon dioxide, methane, water vapor and other gases Acts like the glass in a greenhouse! Acts like the glass in a greenhouse!

6. How greenhouse gases work Allow solar energy to penetrate the atmosphere Allow solar energy to penetrate the atmosphere Sunlight gets converted to heat energy is radiated back to the atmosphere Sunlight gets converted to heat energy is radiated back to the atmosphere Gases causes some heat to become trapped Gases causes some heat to become trapped If these gases weren’t present, the earth would be 30°C cooler than it is today If these gases weren’t present, the earth would be 30°C cooler than it is today

7. Carbon Dioxide gets added to the atmosphere by… Cutting down trees Cutting down trees (Deforestation) (Deforestation) Burning fossil fuels Burning fossil fuels

8. Current Predictions By the year 2050, temperature will increase by 1-2 degrees Celsius By the year 2050, temperature will increase by 1-2 degrees Celsius What could 1-2 degrees do? What could 1-2 degrees do? Low-lying costal regions could flood Low-lying costal regions could flood Storms could become more frequent and severe Storms could become more frequent and severe Last year was the first hurricane season they ran out of letters in the alphabet to name hurricanes!!! Last year was the first hurricane season they ran out of letters in the alphabet to name hurricanes!!! More droughts during the summer season in North America More droughts during the summer season in North America

9. Pollution What is pollution? What is pollution? DDT example DDT example Used as pesticide in farms to kill of harmful pests Used as pesticide in farms to kill of harmful pests When it was sprayed it went into rivers and streams at seemingly harmless levels When it was sprayed it went into rivers and streams at seemingly harmless levels But later found out DDT: But later found out DDT: Is nonbiodegradable (cannot break down) Is nonbiodegradable (cannot break down) Animals do not lose it from their bodies, it stays in there Animals do not lose it from their bodies, it stays in there

10. Problems that occurred from DDT Concentrations increase as you move up the food chain or web Concentrations increase as you move up the food chain or web By the time you the top of the food chain or web, DDT reached concentration had magnified by 10,000,000!! By the time you the top of the food chain or web, DDT reached concentration had magnified by 10,000,000!! Called Biological Magnification – when a toxic substance increases in concentration as it moves up the food chain Called Biological Magnification – when a toxic substance increases in concentration as it moves up the food chain

11. Invasive Species… Are species that are “introduced” to areas where they are not usually found Are species that are “introduced” to areas where they are not usually found These plants and animals seem harmless but they have a large effect on the population the invade or are introduced to… These plants and animals seem harmless but they have a large effect on the population the invade or are introduced to…

12. Invasive Species Invasive species cause a lot of problems because: Invasive species cause a lot of problems because: generally lack any natural predators generally lack any natural predators can reproduce rapidly can reproduce rapidly taking away resources from the “natural” species taking away resources from the “natural” species

13. Invasive Species Examples: Examples: Cane Toads Cane Toads Cane Toads Cane Toads Mussels Mussels Georgia – Kudzu Georgia – Kudzu Why do they put them there in the first place? Why do they put them there in the first place?

14. O-Zone Depletion O-zone protects us from UV radiation and meteors O-zone protects us from UV radiation and meteors Called O-Zone because it is made up of O 3 (tri-oxygen) Called O-Zone because it is made up of O 3 (tri-oxygen) There are now holes in the o-zone layer There are now holes in the o-zone layer UV radiation over-exposure can cause UV radiation over-exposure can cause Sunburns Sunburns Cancer Cancer Damage to eyes Damage to eyes

15. O-zone Depletion Problem caused by chlorofluorocarbons (CFC’s) Problem caused by chlorofluorocarbons (CFC’s) CFC’s cause the holes in the O-zone to get bigger CFC’s cause the holes in the O-zone to get bigger CFC’s are found in CFC’s are found in Aerosol cans Aerosol cans Producing plastic foams Producing plastic foams Collants in refrigerators, air conditioners and freezers Collants in refrigerators, air conditioners and freezers

16. What can we do? Conservation Biology – wise management of natural resources Conservation Biology – wise management of natural resources Avoid – “Tragedy of the Commons” Avoid – “Tragedy of the Commons” When resources are shared they are often used and abused When resources are shared they are often used and abused This is because no one in particular has to take care of them so no one worries about the consequences This is because no one in particular has to take care of them so no one worries about the consequences

17. Odds and Ends Pollution that contributes to Acid Rain is: Pollution that contributes to Acid Rain is: Nitric Oxides and Sulfur Dioxides Nitric Oxides and Sulfur Dioxides Habitat Fragmentation – breaking habitats into smaller pieces, usually caused by human development Habitat Fragmentation – breaking habitats into smaller pieces, usually caused by human development

18. Final Message http://video.google.com/videoplay?docid=845 3442377878175440&q=bluemangroup+global +warming&hl=en http://video.google.com/videoplay?docid=845 3442377878175440&q=bluemangroup+global +warming&hl=en http://video.google.com/videoplay?docid=845 3442377878175440&q=bluemangroup+global +warming&hl=en http://video.google.com/videoplay?docid=845 3442377878175440&q=bluemangroup+global +warming&hl=en