ORGA-201 Lecture Notes - Lecture 6: Passive Smoking, Global Warming

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An increase in earth"s atmospheric temperature when averaged across seasons and geographical regions. Poleward shift in the location of vegetation zones. Rapid and drastic melting of the polar ice caps. The ozone layer is a layer of ozone molecules (o3) in the upper atmosphere that screens out uv rays from the sun. It is a fragile, invisible layer about 16-48 km above the earth"s surface. The ozone layer is being destroyed primarily by chloroluorocarbons (cfcs) North americans use energy to create electricity, transport us, power our industries, and run our homes. About 32% of the energy we use in canada comes from oil. Alternative fuels, wind power, hybrid & electric vehicles. Cut back on driving & keep your car tuned. Most water is puriied in water-treatment plants before being piped into the community. Most water systems provide adequate, dependable supplies, are able to control disease, and provide pleasant tasting water.

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