Through geologic time,continents have drifted over the surface of the Earth,but each continent has 
Definitions:
Free Lunch
An idiom expressing the idea that it is impossible to get something for nothing; in economics, it refers to the impossibility of getting a benefit without a cost.
Scarce
Limited in availability relative to the demand.
Taxpayers
Individuals or entities that are required to pay taxes to a government body, based on their income, property, or purchases.
Free Schooling
Education provided without charge to students, typically funded by the government.
Q2: Most medium- and deep-focus earthquakes occur at<br>A)
Q21: Rhyolite lavas _.<br>A) do not flow as
Q25: _ is the balance between the weight
Q31: Viscous lava that accumulates above a vent
Q38: Which ore minerals are commonly found in
Q43: On a geologic map,if the contacts between
Q44: Through geologic time,continents have drifted over the
Q45: The lowest elevation to which a stream
Q49: A felsic,highly-vesicular volcanic rock is termed<br>A) pumice.<br>B)
Q53: The average time between eruptions is called