Human population and the environment

1
Human population and the environment

• SC.912.L.17.18

2
Too many people!

• Human society and its impact on the biosphere
  were transformed by the Industrial Revolution,
  which added machines and factories to
  civilization during the 1800s
• Led to
• Homes
• Clothes
• Electronic devices
• Large-scale agriculture
• automobiles

3
Energy demand

• As these conveniences were produced, energy was
  needed to fuel the machinery responsible for
  production-coal, oil, natural gas

4
Pollution and Crowding

• Cities and industries discarded wastes from
  manufacturing, energy production, and other
  sources directly into the air, water, and soil
• Urban centers became crowded, so people began to
  move from cities to suburbs
• Caused a spread of suburban communities across
  American landscape

5
Concerns

• Certain kinds of industrial processes pollute
  air, water, and soil
• Dense human communities produce waste that must
  be disposed of
• Suburban growth consumes farmland and natural
  habitats, and can place additional stress on
  plant and animal populations

6
Lesson to learn

• As the population increases (and it is currently
  rising to almost 7 billion people), the demand
  for resources and energy also increases
• As the demand for them increases, so does the
  pollution and habitat loss