Final answer:
Fossils are found in sedimentary rocks, which preserve evidence of ancient life. They are important for understanding Earth's history, including past environments and species evolution.
Step-by-step explanation:
Fossils are found in sedimentary rocks, which preserve evidence of ancient life. Sedimentary rocks are formed when broken pieces of other rocks or the shells of living organisms are deposited and cemented together without melting.
Fossils are important because they provide insights into Earth's history, helping us understand past environments, the evolution of species, and the age of rocks. Some different types of fossils found in sedimentary rocks include petrified wood, ammonites, and trilobites.