What is secondary consumers, primary consumers, and producers?

Why do governments supply public goods and services instead of selling them to those people who use them

Which of the following is one way the goverment of russia is considered more limited than the goverment of the soviet union

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.