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Humans and the Environment What is extinction? l When a species no longer exists.

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Presentation on theme: "Humans and the Environment What is extinction? l When a species no longer exists."— Presentation transcript:

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2 Humans and the Environment

3 What is extinction? l When a species no longer exists

4 Extinction l Natural process l Caused by climate changes, predators, environmental factors, and human involvement

5 Natural Resources l Resources taken from the environment l Renewable resources can be replaced by nature l Nonrenewable resources cannot be replaced

6 Questions l What is extinction? l What are some causes of extinction? l What is the difference between renewable and nonrenewable resources?

7 Pollution l Making the environment unclean with wastes l Gases, chemicals, heat, garbage, and noise l Materials that cause pollution are pollutants

8 Air pollution l Caused by burning fuels and trash l Industries cause such pollution l Causes lung disease and acid rain

9 Water pollution l Industrial wastes, sewage, and chemicals dumped into water supply

10 Soil pollution l Some is caused by pollutants in the air or chemical used to control pests l Burying toxic wastes can cause soil pollution as well

11 Consequences of pollution l Acid rain l Endangering or extinction of animals l Contamination of environment l Poor air quality l Disease

12 Questions l How are the types of pollution different? l What is pollution? l What are some causes of pollution?

13 Conservation l Wise use of materials and energy l Recycling (reusing) materials l Decreasing amounts used l Using alternative forms of energy and materials

14 Questions l What are some ways pollution can affect the environment? l How can humans reduce pollution?


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