Resources

1
Resources Pollution
2
Earths Resources

• NATURAL RESOURCES
• Any part of the natural environment used by
  humans for their benefit
• RENEWABLE RESOURCES
• Natural resource that is replaced or recycled by
  natural processes
• NON-RENEWABLE RESOURCES
• Resources that are available in limited amounts
  and are not replaced or recycled by natural
  processes
• Ex. Fossil fuels
• - substances made from the remain of organisms
  buried underground for millions of years.

3
Extinction

• The disappearance of a species when the last of
  its members dies.
• Most extinction occurs because of the
  destruction of the natural habitat of a species
• Threatened species
• occurs when the population of a species
  declines rapidly
• Endangered species
• occurs when the numbers in the species becomes so
  low that extinction is possible

4
Causes and Effects of Pollution on the Biosphere

• Air pollution
• Acid precipitation
• Ozone depletion
• The greenhouse effect
• Water pollution

5
Air Pollution

• Causes cars, factories, forest fires, volcanos
• Effects
• acid rain
• respiratory diseases (asthma, bronchitis, etc.)
• Adding to greenhouse effect

6
Acid Rain

• Causes
• Pollution from factories and automobiles release
  sulfur gasses.
• Sulfur gasses mix with water in the atmosphere
  and produce sulfuric acid
• Sulfuric acid mixes with rain and falls back to
  the ground
• Effects
• Kills plants kills fish slowly destroys
  buildings

7
Ozone Depletion

• The ozone layer protects us by blocking harmful
  ultraviolet rays (UV rays) from the sun.
• Cause
• The ozone layer is damaged when aerosols mix with
  the ozone and break it down.
• Effect
• Increases in skin cancer due to exposure to
  increased UV rays.

8
Greenhouse Effect

• There are gasses in our atmosphere that are good
  at trapping heat and warming the earth
• Water vapor
• CO2
• CH4 (methane)
• These gasses allow life to exist on earth because
  they keep the earth at a constant temperature.

9
Greenhouse Effect

• Issue If we increase the amounts of the
  greenhouse gasses (via pollution), they will trap
  more heat.
• Effect The temperature of the earth will rise.
• Potential Problems
• Some animals/plants will become extinct because
  they cannot handle the warmer temperatures.
• Glaciers will melt, causing ocean levels to rise
• Flooding
• Loss of habitat leading to more extinction.

10
Water pollution

• Problem
• Chemicals (pesticides, fertilizers, oils,
  greases) get washed into creeks and streams.
• Cause
• Farming, industry, accidents

11
Water Pollution

• Effects
• When the nitrogen in fertilizer is washed into
  creeks/streams/lakes, it causes algae to grow too
  rapidly, which can cause disruptions in food
  chains.
• When pesticides enter the water, they enter the
  food chain, which causes predators to die.
• Oil spills destroy ecosystems, killing all life.