The chemical composition of a mineral never has any variation.?

Which of the following cannot be caused by overpumping of ground water?

A) A cone of depression B) Subsidence and compaction of the aquifer C) A change in the direction of groundwater flow D) Bringing contamination into previously uncontained wells E) All of these are possible consequences of overpumping.

The official language of the Inca Empire was _________________.

Fill in the blank(s) with the appropriate word(s).

Which types of producer service is least export oriented?

A) advertising B) engineering C) real estate D) transport services E) banking

As a general rule, friction is greatest ________

A) near the Earth's surface B) at jet stream altitudes C) near the poles D) near the equator E) at the middle latitudes