Answer:
A crystal face tends to be dull and rugged where a cleavage plane (most commonly seen in mica) is smooth and shiny, only being dull towards the edges it splits.
Answer:
west Edmonton mall located in Edmonton alberta
Rift Valley
A rift valley is a lowland region that forms where Earth's tectonic plates move apart, or rift. ...
Tectonic plates are huge, rocky slabs of Earth's lithosphere—its crust and upper mantle. ...
Many rift valleys are part of “triple junctions,” a type of divergent boundary where three tectonic plates meet at about 120° angles.