Question

Regarding the Great Green Wall movement, identify the correct statements.

1. The Great Green Wall movement was initiated to combat desertification.
2. It is located in the Sahel region, south of the Sahara Desert.
3. The movement was started in 2007.
4. The Great Green Wall is a physical barrier made entirely of concrete.

• A. ii only
• B. i, ii, iii
• C. iii, iv
• D. i only

Answer 1

Answer:

B. i, ii, iii

• Desertification is defined as the march of the desert into neighbouring areas in old days, but today it is used more broadly to include a number of processes which lead to decline in the productive potential of land in arid and semi- arid areas.

• Desertification is said to be moderate if reduction in productivity is between10% and 25%, severe if it is between 25% and 50%, and very severe if it is more than 50%.

• Great Green Wall movement was started in the Sahel region along the southern edge of the Sahara to combat the problem of desertification Initiated in 2007.