Climate Change and Other Threats to the Biosphere

The Biosphere: Land, Water, Atmosphere, and Life The development of the atmosphere and of life Oparin and original atmosphere Heterotrophic life and atmospheric CO2 Photosynthesis and the modern atmosphere The water cycle IMAGES 1-3 Pollution Threatens Much of Life on Earth Sources and indicators of pollution Toxic effects (on people, aquatic species, etc.) Pollution prevention Human Activities Are Affecting the Biosphere Aquatic pollution and its biological effects Bioremediation Air pollution Acid rain Atmospheric ozone IMAGES 4-8 CO2 and climate change, including global warming Glacial retreat in Glacier National Park Mendenhall Glacier, Alaska More Before/After photos