What is the gold worth in USD from 1 ton of Nevada ore?

Based on this map, which statement about africa’s economic activity is most accurate? a) coastal countries are all members of opec b) economic development is more common with opec nations c) coastal countries have more access to productive resources d) economic development is more common above the sahara desert

Which of the following terms describes the layers of air surrounding the earth ?

Explain the value of statistics and other data to positive economics and to normative economics