What IS silt?
Small particles of rich soil. Silt is important for farmers to have enough crops to sell and make a living. It washes up on the banks every flood.
Phosphate... What is it?
Mineral salt used in fertilizer. To help grow crops and kill weeds for farmers.
What are aquifers?
Underground rock layer with water in it. They supply a large amount of people in the desert with fresh water.
Do we need the Aswan Dam?
1 It can store water during droughts for people to drink.
2 It holds more water for crops.
3 A problem is it holds back silt for crops.
Sahara Desert: how big is it?
1The Sahara is the largest desert in the world (3,600,000 sq. miles
2 It stretches across most of Egypt and other countries.
3 As a comparison, it is about the size of the US.
Exploring the Sahara Desert, Morocco - Lonely Planet travel video
Were is it going? What libya's oil money goes to.
The money Libya makes goes to a lot of things. For one it is to build hospitals and schools. Another one is for food. A large amount goes to build a military. So don't worry, the money goes towards Good things.