Oldest fossils are found in __________layer - deepest, youngest fossils are found in _______layer - top, fossils are found in layers of ________ - sedimentary rock, sedimentary rock forms in ___________ - layers, _________give clues about the past - fossils, fossils can tell you ______________ - what the environment was like in the past, footprints preserved in mud are called______ - trace fossils, Whole insects can be trapped in_________ - tree sap , the sap that hardens over time is called - amber,

Fossils

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