The shape of a mineral's crystal indicates it

color
atomic structure
luster
hardness

Arid and semiarid subcategories are part of which climate

Drastic boundary changes can occur for all of the following reasons except for a. a shift in the way a river flows b. the collapse of a government system c. a conflict between two neighboring groups d. one country's decision to sell land to another country select the best answer from the choices provide

What part did glaciers play in forming the great lakes?