Grade 11

The General Background to Water Availability

Over 70% of the Earth's surface is covered with water, most of which is salty water of the seas and ...
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The Water Cycle and sources of Fresh Water

We now need to look at the physical background of water supply.  The basic water cycle is shown on the ...
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Uses of Water – Domestic, Agriculture and Industrial

Water used for domestic purposes Water is used for many different things at home. Water is used for cooking, cleaning, ...
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Water and Health

It is appropriate at this stage to look at the relationship between water supply and health. We have seen how ...
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/ Grade 11, Water

Water Conservation

The need to conserve water, cannot be stressed enough, making the maximum use of water resources is especially important in ...
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/ Grade 11, Water