Question

B. Give two examples each of the following.
1. Layers of atmosphere
2. Uses of water
3. Methods of removing insoluble
impurities from water
4. Air pollutants
5. Renewable forms of energy
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Answer 1

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Answer 2

Atmosphere has four primary layers, which are the troposphere, stratosphere, mesosphere and thermosphere.

Water use is probably the most important daily use of water for most people.Domestic use includes water that is used in the home every day, including water for normal household purposes,such as drinking,food preparation, bathing, washing clothes and dishes, flushing toilets,watering lawns and gardens.

Methods of removing insoluble impurities from water is the distillation, precipitation and separation,ion exchange and membrane separation.

Air pollutants is ozone (03)-A free radical of oxygen (smog)

carbon monoxide - product of incomplete combustion.

Renewable forms of energy is the solar energy,wind energy,hydropower, geothermal energy and biomass energy.

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