Causes of desertification Flashcards
1
Q
Define ‘desertification’
A
When fertile land becomes desert.
2
Q
How many people are at risks of desertification
A
1 Billion people
3
Q
Which areas are at risks of desertification.
A
Most areas are found on the edge of an existing desert (e.g N and S of Sahara Desert)
4
Q
List me 3 causes of desertification.
A
- Climate Change
- Soil Erosion
- Over cultivation.
5
Q
How climate change causes desertification
A
It rains less than it did 50 yrs ago > Results in drier conditions
6
Q
How soil erosion causes desertification
A
Vegetation destroyed > soil being exposed > vulnerable to erosion
