The sahel

Question 1

What is the process affecting the Sahel

Answer 1

Desertification

Question 2

What is desertification

Answer 2

Process by which lands turns to desert

Question 3

Explain how desertification occurs

Answer 3

Grassland overgrazed and less rain means more evapotranspiration, both leading to soil becoming bare which then is eroded by wind and water, then becoming infertile and therefore desert

Question 4

Where is the Sahel

Answer 4

North Africa, under the Sahara desert crosses countries such as Ethiopia, Niger , Mali

Question 5

How does desertification affect people ( 5 )

Answer 5

1/ Crops and cattle die, resulting in famine
2/ Lack of fuel woord
3/ Death
4/ Migrants move to cities resulting in overpopulation
5/ Malnutrition

Question 6

How does desertification affect people ( 5 )

Answer 6

1/ Soil erosion - from wind and rain when it does come
2/ Sun baked, cracked soil, dry rivers
3/ Loss of plants and animals
4/ Growth of desert
5/ increase in sandstorms and flash floods

Question 7

Name 3 solutions

Answer 7

1/ Plant trees
2/ “Magic stones”
3/ Appropriate technology

Question 8

Explain why planting trees is a solution

Answer 8

Roots bind soil together, cheap, long term, can be used as fuel wood

Question 9

Explain why magic stones are a solution

Answer 9

Planted across contour lines, they prevent surface run off and increases infiltration and soil fertility. Cheap to build and increases crop yield

Question 10

Explain why appropriate technology is a solution and give examples

Answer 10

Boreholes for drinking water/irrigation