17) q: a: after the civil war, what lifestyle did many poor whites and freed slaves adopt? a) drugs and alcohol b) they became cowboys c) they enrolled in college d) share cropping and tenant farming

The controlled use of fire by hominids: (a) limited the expansion of hominids into certain environments, such as dry grasslands. (b) decreased the amount of food energy available in the hominid diet. (c) contributed to geographical expansion and food production techniques in positive ways. (d) has been shown to contribute little to the digestive process of hominids.