The Sahel 5.0 / 5 based on 1 rating ? GeographyClimate changeGCSEWJEC Created by: Elise1999Created on: 23-05-16 20:58 3421 Across 1. Deforestation - 80% water is recycled back through evapotranspiration. If there are no trees = less evapotranspiration = drought. Population increase (doubling every 20 years) (12) Down 1. Along Tropic of Cancer = (Long dry season - 9 months followed by wet season - 3 months) area of permanent high pressure (holds no moisture). Global warming - Has been getting drier over the past 40 years. Migration due to war (Niger, Nigeria, Mali) (6) 2. Nutrients in soil can be removed by wind or water. Salt build up makes it harder for plant growth. Vegetation is damaged. Causes famine. Flooding (7) 3. Bunds (low stone walls) used in crop growing regions of Burkina Faso ad Mali. They prevent rain from washing the top soil away. The Great Green Wall is 15km wide on average. It would halt desertification and increase plant growth. (10) 4. The Sahel is a Semi-arid region of North Central Africa, South of the Sahara desert (4, 3, 6)
Comments
No comments have yet been made