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Understanding Our Environment Section 1.1

Understanding Our Environment Section 1.1. Objectives: Identify the influence of human population, technology, and cultural and industrial changes on the environment. Define Environmental Science. How do you think environmental problems are identified?

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Understanding Our Environment Section 1.1

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  1. Understanding Our EnvironmentSection 1.1 Objectives: Identify the influence of human population, technology, and cultural and industrial changes on the environment.

  2. Define Environmental Science • How do you think environmental problems are identified? • How long ago do you think environmental “problems” started? • Rachel Carson’s Silent Spring • New York City and Manhattan • The Fall of Troy • Large mammal extinction

  3. Our Environment Through Time

  4. Hunter-Gatherers • Obtain food by ______________. • Small groups migrated from place to place, following game and crops. • Still exist in New Guinea and Amazon rain forests of South America • How do they affect the environment? • Spread plants • Animal extinction • Destruction of land (i.e., burning prairies)

  5. The Agricultural Revolution • Collect seeds of plants gathered and domesticate animals. • More people in smaller areas. • What effects would this have? • Slash-and-burn to convert land to farmland. • What happens when forests are cleared like this?

  6. The Industrial Revolution • Mid-1700’s • Energy use shifted from animal muscle and water power to fossil fuels to power machines. • Even more people in smaller areas. • Effects? (Think both positive and negative.) • “Population Growth” – p.13

  7. Our Main Environmental Problems • Pollution • Biodegradable • Nondegradable • Resource depletion • Natural resource • Renewable resources - examples • Non-renewable resources - examples • Loss of biodiversity

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