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Question

An oligotrophic lake is characterised by

A
great changes in water level
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B
long food chains
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C
low nutrient contents and little life
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D
high nutrient levels and abundant flora and fauna
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Solution

The correct option is C low nutrient contents and little life
An oligotrophic lake is a lake with low primary productivity, as a result of low nutrient content. These lakes have low algal production, and consequently, often have very clear waters, with high drinking-water quality.
So, the correct option is 'low nutrient contents and little life'.

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