Fort duquesne and fort necessity were alike in what way
a. the british had built and used both to guard materials and defend their areas.
b. both were used to house colonists in the thirteen colonies
c. the french had built and used both to guard materials and defend their area.
d. both forts were used to guard materials and defend areas

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.