Question

1. what type of weathering caused the grand canyon?

Explanation:

The Grand Canyon was formed by physical (mechanical) weathering and erosion over a long - time. Physical weathering processes like freeze - thaw cycles, abrasion by wind - blown sand, and the action of water in cracks in rocks contributed to breaking down the rock. Erosion by the Colorado River and its tributaries then carried away the weathered material.

Answer:

Physical (mechanical) weathering