Burkina Faso and the Keita project in Niger demonstrate that
A) corrective management measures can successfully reverse soil degradation.
B) sustainable soil conservation efforts are impossible once soils are degraded.
C) despite human efforts, natural climate cycles may prevent sustainable practices.
D) desertification is a natural result of climate variation.
Question 2
In the more livable modern cities of the world, such as Curitiba, Brazil, a person would be less likely to see
A) parking lots.
B) automobiles.
C) highways.
D) parking lots, automobiles, and highways.