'''Sedimentary rocks''' are composed of small bits of [[rocks]] ([[mud]], [[sand]], [[gravel]]), and sometimes [[plants]] and/or [[animals]], that have become '[[cemented]]' together in layers over time.
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'''Sedimentary rocks''' are composed of small bits of [[rock|rocks]] ([[mud]], [[sand]], [[gravel]]), and sometimes [[plants]] and/or [[animals]], that have become '[[cemented]]' together in layers over time.
Composed of [[bonded]] [[grains]] of [[eroded]] rocks. Many break in [[plate-like]] fragments.
Composed of [[bonded]] [[grains]] of [[eroded]] rocks. Many break in [[plate-like]] fragments.