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Ecosystem health . Acid Rain . Acid Rain Distribution in the US. Effects of Acid Rain . Too much Nitrogen…. Sewage treatment plants and fertilizers release excess nitrogen into streams and rivers.
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Too much Nitrogen…. • Sewage treatment plantsand fertilizers release excess nitrogen into streams and rivers. • causes the rapid growth of algae (eutrophication) decreasing dissolved oxygen in the water.
Ozone Layer • Ozone - Ozone Hole Peaks Over Antarctica
Too Much CO2… Greenhouse Effect - greenhouse gases absorb solar energy and trap heat within the atmosphere (like a greenhouse) One result of the Greenhouse Effect is Climate Change (Global Warming) Polar bear Alcatraz: an uncertain future Global Temperature
Biomagnification • Increase of toxic substances as you move up the food chain
Disturbances • Belize Coral Reef – • What two events disturbed the reef in 1998? • Paradise Redefined – • What initially caused the degradation of the coral reef on Polmyra? • Can coral regrow? Or recover? • What gave the scientists hope on Polmyra?
Do you have an impact on Ecosystem Health? • Human Footprint - All the stuff you buy, use, or throw away. • Carbon Footprint - measure of the amount of greenhouse gases (CO2, CH4) released into the atmosphere by a single company, household, or individual
It’s All About Carbon • NPR
Calculating Your Carbon Footprint • Footprint Calculator • Human Consumption • Carbon Footprint Calculator
National Geographic • Part 1 • Part 2 • Part 3 • Part 4 • Part 5 • Part 6 • Part 7 • Part 8 • Part 9 • Part 10
Garbage Patch • Lies in the center of the pacific ocean in the N. Pacific Gyre - circular flow of oceanic currents • “Swirling ocean of debris” • Twice the size of Texas! • Plastic to sea life ratios are 6:1
Addicted to Plastics • Time Magazine – 1955 “Throwaway Living”
Sustainability • long-term maintenance of responsibility for our future generations. • What can we do now to make sure our future generations have a “health Earth?”