Humans and the environment
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Humans and the Environment. What is extinction?. When a species no longer exists. Extinction. Natural process Caused by climate changes, predators, environmental factors, and human involvement. Natural Resources. Resources taken from the environment

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Humans and the Environment

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Humans and the Environment


What is extinction?

  • When a species no longer exists


Extinction

  • Natural process

  • Caused by climate changes, predators, environmental factors, and human involvement


Natural Resources

  • Resources taken from the environment

  • Renewable resources can be replaced by nature

  • Nonrenewable resources cannot be replaced


Questions

  • What is extinction?

  • What are some causes of extinction?

  • What is the difference between renewable and nonrenewable resources?


Pollution

  • Making the environment unclean with wastes

  • Gases, chemicals, heat, garbage, and noise

  • Materials that cause pollution are pollutants


Air pollution

  • Caused by burning fuels and trash

  • Industries cause such pollution

  • Causes lung disease and acid rain


Water pollution

  • Industrial wastes, sewage, and chemicals dumped into water supply


Soil pollution

  • Some is caused by pollutants in the air or chemical used to control pests

  • Burying toxic wastes can cause soil pollution as well


Consequences of pollution

  • Acid rain

  • Endangering or extinction of animals

  • Contamination of environment

  • Poor air quality

  • Disease


Questions

  • How are the types of pollution different?

  • What is pollution?

  • What are some causes of pollution?


Conservation

  • Wise use of materials and energy

  • Recycling (reusing) materials

  • Decreasing amounts used

  • Using alternative forms of energy and materials


Questions

  • What are some ways pollution can affect the environment?

  • How can humans reduce pollution?


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