1. How is degraded soil reclaimed? 2. How is human overpopulation related to world soil problems? 3. President Franklin D. Roosevelt once sent a letter to the state governors in which he said, “A...

1. How is degraded soil reclaimed?

2. How is human overpopulation related to world soil problems?

3. President Franklin D. Roosevelt once sent a letter to the state governors in which he said, “A nation that destroys its soils, destroys itself.” Explain his statement.