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KEY CONCEPT Fossil fuel emissions affect the biosphere.

Learn how fossil fuel emissions, including carbon dioxide, water, and methane, affect the biosphere and contribute to pollution, greenhouse effect, acid rain, and global warming.

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KEY CONCEPT Fossil fuel emissions affect the biosphere.

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  1. KEY CONCEPT Fossil fuel emissions affect the biosphere.

  2. Greenhouse Effect • Carbon dioxide, water, and methane molecules absorb energy reradiated by Earth’s surface and this slows the release of energy (heat) from Earth’s atmosphere.

  3. Pollutants accumulate in the air. • Pollution is any undesirable factor added to the air, water, or soil. • Smog is one type of air pollution. • sunlight interacts with pollutants in the air • pollutants produced by fossil fuel emissions • made of particulates and ground-level ozone

  4. Acid rain is caused by fossil fuel emissions. • produced when pollutants in the water cycle cause rain pH to drop • can lower the pH of a lake or stream • can harm trees • Smog can be harmful to human health.

  5. Air pollution is changing Earth’s biosphere. • The levels of atmospheric carbon dioxide rise and fall over time. • High levels of carbon dioxide are typical of Earth’s warmer periods.

  6. carbon dioxide(CO2) methane (CH4) water (H2O) • The greenhouse effect slows the release of energy from Earth’s atmosphere. • 1.sunlight penetrates Earth’s atmosphere • 2.energy is absorbed and reradiated as heat • 3.greenhouse gases absorb longer wavelengths • 4.Greenhousegas moleculesrereleaseinfraredradiation

  7. Global warming refers to the trend of increasing global temperatures. North Pole

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