POLUTION

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¨A machine that converts energy into mechanical force or motion¨.

• WASTE

• POLLUTION

• ENGINES

• OZONE LAYER

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¨Waste material such as garbage, refuse, rubbish, and trash.¨

• POLLUTION

• ENGINES

• AEROSOLS

• WASTE

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¨The act or process of polluting or the state of being polluted, especially the contamination of soil, water, or the atmosphere by the discharge of harmful substances.

• POLLUTION

• WASTE

• OZONE LAYER

• AEROSOLS

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¨A suspension of small particles in a gas; the particles may be solid or liquid or a mixture of both.¨

• POLLUTION

• ENGINES

• AEROSOLS

• OZONE LAYER

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¨Region of the stratosphere containing relatively high concentrations of ozone.¨

• ENGINES

• AEROSOLS

• OZONE LAYER

• WASTE