Which mineral property describes a mineral's resistance to being scratched

A) streak

B) fracture

C) cleavage

D) hardness

Is Pennsylvania apart of the U. S colonies

How did the Arabian peninsula establish trade routes

Early in the 20th century a geophysicist/astronomer named Milutin Milankovitch studied orbital forcing cycles including axial precession, precession of equinoxes, and orbital eccentricity.

Which of the following has an impact on the long term weather conditions of a location

Which of the following statements is most accurate about karst regions? A. South America has more outcrops of carbonate rocks than any other continent. B. Karst regions and carbonate rock outcrops occur on every continent except Antarctica. C.

Why is free trade an advantage to less economically developed countries

The north pole is 100° north latitude

What two things make up an area's climate?

Apparent polar wander indicates that: a. the north magnetic pole wanders slowly around the entire Earth over million years timescales b. the continents have moved around the Earth's surface over million year time scales. c.

Is Egypt in the middle east? I know its in north africa, but its still considered middle east, right?