Main Ideas page 428

1.) It's provided irrigation for thousands of years
2.) Minerals - gold, platinum, chromium, cobalt, copper, phosphates, and diamonds
3.) America will come to bring freedom

4.) 20% of it is sand, and the rest is mountains, rock formations, and gravelly plains
5.) Central Africa has rain falling throughout the year while the rest of Africa has one or two rainy   seasons
6.) The soil is perfect for growing grass and it can grow to be the size of a human. It's perfect for grazing animals
7.) 70% of plants useful for cancer treatment are found in rain forests and they have 600 species of trees