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KEY CONCEPT Fossil fuel emissions affect the biosphere.

KEY CONCEPT Fossil fuel emissions affect the biosphere. Pollution is any undesirable factor added to the air, water, or soil. Smog is one type of air pollution. sunlight interacts with fossil fuel emissions made of particulates and ground-level ozone can be harmful to human health.

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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. Pollution is any undesirable factor added to the air, water, or soil. • Smog is one type of air pollution. • sunlight interacts with fossil fuel emissions • made of particulates and ground-level ozone • can be harmful to human health.

  3. 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

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

  5. carbon dioxide(CO2) methane (CH4) water (H2O) • The Greenhouse effect slows the release of energy from Earth’s atmosphere. • sunlight penetrates Earth’s atmosphere • energy is absorbed and reradiated as heat • greenhouse gases hold the heat in • Earth’s temperature increases

  6. Thinning Ozone Layer • O3 • Screens • Harmful in the lower atmosphere • Responsible for odor after thunderstorms • Hole in ozone layer over Antarctica • Prevents of UV radiation gets through

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

  8. 16.4 Threats to Biodiversity The loss of biodiversity has long-term effects. • Loss of medical and technological advances • Extinction of species • Loss of ecosystem stability

  9. 16.4 Threats to Biodiversity Loss of habitat eliminates species. • Habitat fragmentation - prevents an organism from accessing its entire home range. • Occurs when a barrier forms within the habitat • Often caused by human development

  10. 16.4 Threats to Biodiversity • Corridors can be road overpasses or underpasses • Allow species to move between different areas of habitat • Habitat corridors - are a solution to the problem

  11. 16.4 Threats to Biodiversity Introduced species - one that is brought to an ecosystem by humans • Can disrupt stable relationships in an ecosystem. • Accidental or purposeful

  12. 16.4 Threats to Biodiversity • Invasive species - can have an environmental and economicimpact. • Often push out native species. • Ex: Burmese python (Florida Everglades)

  13. 16.1 Human Population Growth and Natural Resources KEY CONCEPT As the human population grows, the demand for Earth’s resources increases.

  14. 16.1 Human Population Growth and Natural Resources Earth’s human carrying capacity is unknown.

  15. 16.1 Human Population Growth and Natural Resources • Gas-powered farm equipment • Medical advancements • Technology has helped to increase Earth’s carrying capacity

  16. 16.1 Human Population Growth and Natural Resources Nonrenewable resources are used faster than they form. • Coal • Oil • Growing use of nonrenewable resources may lead to a crisis

  17. 16.1 Human Population Growth and Natural Resources • Renewable resources cannot be used up or can replenish themselves over time • wind • water • sunlight

  18. 16.1 Human Population Growth and Natural Resources Effective management of Earth’s resources will help meet the needs of the future.

  19. 16.1 Human Population Growth and Natural Resources • An Ecological footprint is the amount of land needed to support a person. • Food and water • Shelter • Energy • Waste

  20. 16.1 Human Population Growth and Natural Resources • Amount and efficiency of resource use • Amount and toxicity of waste produced • Several factors affect the size of the ecological footprint.

  21. 16.5 Conservation KEY CONCEPT Conservation methods can help protect and restore ecosystems.

  22. 16.5 Conservation Sustainable development manages resources • meets needs without hurting future generations.

  23. 16.5 Conservation • The timber industry has started to adopt sustainable practices. • Global fisheries have adopted several sustainable practices. • rotation of catches • fishing gear review • harvest reduction • fishing bans

  24. 16.5 Conservation Protecting Earth’s resources helps protect our future. • The Environmental Protection Agency (EPA) was created in 1970. • Develop policies and regulations to protect the environment. • Clean Air Act • Clean Water Act • Endangered Species Act

  25. 16.5 Conservation Conservation focus on a few species but benefit entire ecosystems. • The Endangered Species Act works to protect individual species from extinction. • A listed species is often called an umbrella species. • the habitat in which the species lives must be protected • other species are protected because they share the ecosystem

  26. 16.5 Conservation • The National Park Service helps manage public lands. • The park system includes over 390 areas, covering 84 million acres.

  27. 16.5 Conservation • There are several ways that people can help protect the environment. • control population growth • develop sustainable technology and practices • protect and maintain ecosystems

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