The broadcast that reported a decline in total output for the united states probably got some of its information from the government's measurement of

If an atom has 35 protons in the uncles , how many elements will it have orbiting the nucleus

Why have the aztec ruins in mexico city not been dug up?

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.