Final answer:
Sedimentary rocks are the most common bedrock on the continents and comprise about 75 percent of the surface. They are formed from the deposition and cementation of particles carried in air or water.
Step-by-step explanation:
Sedimentary rocks are the most common bedrock on the continents and comprise about 75 percent of the surface. These rocks are formed from the deposition and cementation of particles carried in air or water, including rocks, gravel, sand, silt, clay, and mud. Examples of sedimentary rocks include sandstone, shale, and limestone.