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Review 10.1

Review 10.1. What is Biodiversity? 3 levels of biodiversity? Define Keystone species – otters? Why is genetic diversity important? Human uses of organisms? What is ecotourism?. 10.2 Biodiversity at Risk. Unscramble key terms. Extinction. Extinction has increased since 1800.

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Review 10.1

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  1. Review 10.1 • What is Biodiversity? • 3 levels of biodiversity? • Define Keystone species – otters? • Why is genetic diversity important? • Human uses of organisms? • What is ecotourism?

  2. 10.2 Biodiversity at Risk Unscramble key terms

  3. Extinction • Extinction has increased since 1800. • Predict b/t 1800 and 2100 25% of all species on Earth may become extinct. • A species that is likely to become extinct if not protected is gereddanen __________________. • A species that is declining and likely to become endangered if not protected is called netedreath_________________________.

  4. How does extinction happen • Habitat destruction • Invasive species • Hunting • Illegal hunting chpaoing _______________ • Pollution

  5. Critical biodiversity • Ecologists often use the number of native plants as an indicator of overall biodiversity. • Native plants and animals only found in a limited area are known as demicen___________________. • Critical areas: • Tropical rain forests • Coral reefs and coastal ecosystems • Islands

  6. Hotspots • Spotshot___________________are the most threatened areas of high species diversity on Earth. • US hotspots • Everglades • California coast • Hawaii • Midwest prairies • Pacific Northwest forests.

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