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

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KEY CONCEPT As the human population grows, the
demand for Earths resources increases.
Please write in the vocab words.
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In this section, we will investigate the
following MI State Standards.

• L3.p3A -- Identify the factors in an ecosystem
  that influence fluctuations in population size.
• L3.p4A -- Recognize that, and describe how, human
  beings are part of Earths ecosystems. Note that
  human activities can deliberately or
  inadvertently alter the equilibrium in
  ecosystems.
• B3.4C -- Examine the negative impact of human
  activities.

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Earths human population continues to grow.

• The good news is that our technology and medical
  advances have allowed more people to live longer
  lives.

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Earths human population continues to grow.

• Earths human carrying capacity is unknown.
• It has changed as our technology has advanced.

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• Technology has helped to increase Earths
  carrying capacity.

• gas-powered farm equipment to utilize the natural
  resources better
• medical advancements to cure/prevent diseases

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The growing human population exerts pressure on
Earths natural resources.

• Nonrenewable resources are used faster than they
  form.
• coal
• oil

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• Renewable resources cannot be used up and can
  replenish themselves over time.

• wind
• water
• sunlight

• Growing use of nonrenewable resources may lead to
  a crisis.
• Resources must be properly managed.

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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.

• L3.p4A -- Recognize that, and describe how, human
  beings are part of Earths ecosystems. Note that
  human activities can deliberately or
  inadvertently alter the equilibrium in
  ecosystems.

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Effective management of Earths resources will
help meet the needs of the future.

• Easter Island was once covered with trees.
  Through
• clear-cutting
• (removal of all the trees)
• the island has been
• stripped of its
• renewable resource,
• and is now bare of
• any significant tree
• population.

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• An ecological footprint is the amount of land
  needed to support just one person.

• The land must produce and maintain enough
• food and water
• shelter
• energy
• and handle all the waste.

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• An ecological footprint is the amount of land
  needed to support just one person.
• Different cultures use/require
• different ecological footprints

More developed societies have families with the
largest ecological footprints.
Small, extremely primitive families also have
very small footprints.
A flower has a very small ecological footprint.
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• 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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• The ecological footprint for the North America is
  9.7 (almost 10) hectares.
• Q (1) Which region has the highest ratio of
  ecological footprint size to population size?
• (2) Which region
• has the lowest ratio?