Africa is known for their precious diamond mining so diamond is one. Oil is also another big thing
Answer and explanation:
As we know, inside the bag of potato chips there is also air. Air is, of course, composed of several gases, such as oxygen, nitrogen and carbon dioxide. When the atmospheric pressure is high, the volume of gas is reduced. Therefore, if the pressure is lowered, the volume increases. That is why the bag gets puffy. You've taken it from a place with higher atmospheric pressure to one where it is lower, so the gas will expand.
Franklin wanted the college curriculum to include subjects he considered valuable. “As to their STUDIES, it would be well if they could be taught every Thing that is useful, and every Thing that is ornamental
