KEY%20CONCEPT%20As%20the%20human%20population%20grows,%20the%20demand%20for%20Earth - PowerPoint PPT Presentation

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KEY%20CONCEPT%20As%20the%20human%20population%20grows,%20the%20demand%20for%20Earth

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Title: KEY%20CONCEPT%20As%20the%20human%20population%20grows,%20the%20demand%20for%20Earth


1
KEY CONCEPT As the human population grows, the
demand for Earths resources increases.
2
Earths human population continues to grow.
  • Earths human carrying capacity is unknown.

3
  • 2 technological advancements that have
    contributed to population growth
  • gas-powered farm equipment
  • medical advancements

4
The growing human population exerts pressure on
Earths natural resources.
  • Resource Type Description
  • Renewable resources -wind
    cannot be used up or can replenish themselves
    over time. -water
  • -sunlight
  • Nonrenewable resources -coal
  • are used faster than they form. -oil

5
Effective management of Earths resources will
help meet the needs of the future.
  • Earths resources must be used responsibly.
  • Careless use of resources makes them unavailable
    to future generations.
  • Easter Island isan example ofirresponsibleresou
    rce use.

6
  • An ecological footprint is the amount of land
    needed to support a person.
  • The land must produce and maintain enough
  • food and water
  • shelter
  • energy
  • waste

7
  • Several factors affect the size of the ecological
    footprint.
  • amount and efficiency of resource use
  • amount and toxicity of waste produced
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