How might the invention of a new powerful fuel source for cars and trucks affect the countrys production possibilities frointier?

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.

How do comedies differ from tragedies

Uses money from peoples savings to make mortgage loans