What percentage of the African continent does the Sahara Desert cover?

• 40%

• 10%

• 30%

• 20%

What has caused the Sahara Desert to spread more rapidly in recent decades?

• Urbanization

• Increased rainfall

• Soil degradation and decline in rainfall

• Deforestation

What is the Great Green Wall?

• A tourist attraction

• A new type of plant

• A multi-state project to stop desertification

• A wall to keep out animals

How long is the Great Green Wall planned to be?

• 7,000 kilometers

• 5,000 kilometers

• 3,000 kilometers

• 1,000 kilometers

Which country was the first to begin planting for the Great Green Wall?

• Morocco

• Egypt

• Senegal

• Nigeria

When was the first seed for the Great Green Wall planted?

• 2005

• 2008

• 2010

• 2012

What is the main goal of the Great Green Wall project?

• To increase tourism

• To build a wall

• To create a new forest

• To stop desertification

What is the Sahel?

• A river

• A mountain range

• A desert

• A belt of dry grassland

What is one of the benefits of the Great Green Wall mentioned in the text?

• Increased rainfall

• More wildlife

• More tourists

• Improved soil quality

What is the role of Colonel SAR in the Great Green Wall project?

• Project's technical director and forest expert

• Project's financial manager

• Project's lead engineer

• Project's marketing director