What kind of a subject is economics? a performing art a fine art a social science a physical science

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.

Put the following steps for calculating net worth in the correct order. step #1: step #2: step #3: step #4: step #5:

Ais a group of people living and working under a set of rules and traditions.