Which three elements are essential for growing crops? environmental hazards, moisture retention, refinement gasoline additives, coal-burning plants, seed corn grain elevators, soil stability, carbon dioxide sunlight, water, soil

What characteristic of the basin that feeds the congo river system affects movement in central africa? a. the center of the basin is a dense rain forest. b. it is the center of ethnic conflict in the area. c. wildlife on the savanna makes it too dangerous to travel. d. the basin is surrounded by desert.