The mohs scale measures
a. density of a mineral.
b. a mineral’s hardness.
c. the luster of a mineral.
d. a mineral’s type of crystalline structure.

The african continent is home of the worlds largest desert and longest river . t or f

Where the main factor that enabled the growth of cities and civilizations was the existence of

Extensive and unusual cold snaps have occurred here recently. is this evidence that global warming is lessening or not occurring? no—although the long-term trend is for warming, short-term weather patterns can still be variable. no—melting of glaciers and ice caps is making the oceans cooler, which can cause cold snaps. yes-- if global warming really were occurring, cold snaps wouldn’t happen. yes—due to global warming, weather patterns should be become less—not more—variable.