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Natural Resources

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ESE 2010 Origins of Resources Biotic: resources obtained from the biosphere Examples: forests, animals, minerals and decaying matter Abiotic: resources comprised of ... – PowerPoint PPT presentation

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Title: Natural Resources


1
Natural Resources
  • ESE 2010

2
Origins of Resources
  1. Biotic resources obtained from the biosphere
  2. Examples forests, animals, minerals and decaying
    matter
  3. Abiotic resources comprised of nonliving things.
  4. Examples land, water, air, ores (gold, copper,
    iron), Uranium and Plutonium

3
Stages of Development
  1. Potential Resources those that exist in a region
    and may be used in the future
  2. example Petroleum may exist in many parts of
    India, in sedimentary rock, but until it is
    drilled and put to use, it remains potential
  3. Actual Resources those that have been surveyed,
    quality and quantity determined, and are being
    used in present times
  4. example Wood processing depends on the
    technology available and the cost involved.
  5. Reserve the part of the actual resource that can
    be developed profitably.

4
Types of Resources
  1. Non-exhaustible Resources
  2. Renewable Resources
  3. Non-renewable Resources

5
Types of Resources Cont.
  1. Non-exhaustible Amounts of these resources are
    not affected, in quantity, by human consumption
  2. wind
  3. sunlight
  4. air
  5. Renewable Amounts are depleted by human use, but
    may be replenished in a reasonable amount of
    time, thus maintaining flow.
  6. crops
  7. water
  8. forests

6
Types of Resources Cont.
  • Non-renewable (Exhaustible) Formation of
    non-renewable resources is extremely slow. They
    can not be replenished once they are depleted.
    (fossil fuels)
  • Metallic Minerals can be re-used by recycling
  • Coal and Petroleum can not be recycled

7
Fossil Fuels
  • Fossil fuels take millions of years to form.
  • They are the product of the fossilized remains of
    dead plants and animals that have been exposed to
    the heat and pressure deep within the earths
    crust.
  • Examples include petroleum (gasoline), natural
    gas, and coal.

information on fossil fuels from abcteach.com
8
Fossil Fuels cont.
  • Its estimated that 86 of the worlds energy
    comes directly from burning fossil fuels.
  • Fossil fuels are the source of energy for almost
    every machine, including the generators that
    produce electric energy.
  • Fossil fuels are being consumed faster than they
    can be produced.
  • Fossil fuels are a major contributor to air
    pollution because when they are burned they
    release many dangerous gases such as nitrogen
    dioxide, methane, and carbon dioxide.

9
Solar Energy
  • The sun brings heat and light to the world.
  • The sun shines naturally and is not affected by
    human activity. Its intensity varies with the
    seasons.
  • The suns rays are used for energy by organisms
    that undergo photosynthesis. Nearly every
    organism on the planet gets energy through
    photosynthesis, directly or indirectly.

10
Wind
  • Wind is caused by the uneven heating of the
    atmosphere.
  • Some areas of the world, such as costal regions,
    have more wind than others because the terrain of
    the area is relatively flat and has few obstacles
    to block the wind from blowing.
  • The power of the wind has been used to power
    windmills that grind grain. Windmills can also
    use the circular movement of the blades to turn a
    turbine. This is increasingly used as a means of
    generating electricity.

11
Wind cont.
  • Wind power does not make greenhouse gas
    emissions. It does not directly cause pollution.
  • However, critics of wind power say a large number
    of windmills could cause problems for animals,
    especially migratory birds. Some people think the
    windmills are unattractive.

12
Water
  • Water is the only common substance that exists on
    the Earths surface that exists as a solid,
    liquid and gas
  • The hydrologic cycle naturally purifies water
  • Water can be used for drinking, cooking, or in
    turbines to create energy
  • Problems are that there are limited amounts of
    fresh water
  • about 97 of water is in the oceans

13
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14
Water Cont.
  • What are the processes of the hydrologic cycle?

15
Natural Resource Management
  • Natural resource management is a discipline in
    the management of natural resources such as land,
    water, soil, plants and animals, with a
    particular focus on how management affects the
    quality of life for both present and future
    generations.
  • Natural resource management is interrelated with
    the concept of sustainable development, a
    principle that forms a basis for land management
    and environmental governance throughout the
    world.
  • In contrast to the policy emphases of urban
    planning and the broader concept of environmental
    management, Natural resource management
    specifically focuses on a scientific and
    technical understanding of resources and ecology
    and the life-supporting capacity of those
    resources.

16
Resources
  • information on fossil fuels, solar energy and
    wind from abcteach.com
  • Earth Comm Text
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