Question

give two reason of desertification

Answer 1

'climatic variation 'and 'human activities' can be regarded as two reasons of desertification.
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Answer 2

'Climatic variations' and 'Human activities' can be regarded as the two main causes of desertification. removal of the natural vegetation cover（by taking too much fuel wood）, agricultural activities in the vulnerable ecosystems of arid and semi-arid areas, which are thus strained beyond their capacity.

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