What river is responsible for the formation of the grand canyon?.

[fw.02]sinkholes are often formed as a result of the actions of. a.heat on recharge b.pressure on aquifers c.acid in groundwater d.minerals in hot springs

What are two australian geographical features that hindered early exploration? western plateau gulf of carpentaria great barrier reef great dividing range

The magnitude of an earthquake is typically calculated according to the scale.           a. mercalli   b. fujita   c. richter   d. saffir-simpson