What type of sedimentary rocks form from once-separate grains that have been packed together and then cemented to one another (lithified)?

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Clastic rocks form from the accumulation and lithification of sedimentary particles, including sand, silt, and clay, which were once separate grains. These particles are often transported by water or wind and deposited in layers. Over time, the layers become compacted and cemented together to form rock. Examples of clastic rocks include sandstone, shale, and conglomerate.

What Type of Sedimentary Rocks Form from Once-Separate Grains That