Scientists find dance rock on earth's surface that is made of magnesium and smaller amounts of aluminum and silicon. what layer of earth might this rock scientists study?

Arecession is the total value of all goods produced in a country in a given year total value of all goods and services produced in a country in a given year total amount of money earned in a nation over a specific period of time none of the answers are correct.

What is political freedom? how is it different from economic freedom?

What was the purpose of the cuban revolution