what is the fragment of whethered rock??, sediment, tectonic plates, metamorphic, lava, In what layer is rock the oldest??, top layer, middle layer, bottom layer, What are fossils, They are ancient organism imprinted into a rock, They are old artifacts, What do fossils tell us?, How valuable they are to collectors, How different earth was then:the climate, types of animals, In which rocks are fossils usually in, Sedimentary, Metamorphic, Any, Where are fossils found, Water, Rocks, Trees, What is an index fossils, The fossils that the usually collected, the remains of an organism that was common and widespread, but only existed for about 1 million years or less.processes, Oldest fossils there are, How long do you think it takes for the effects of weathering and erosion to be visible?How long do you think it takes for the effects of weathering and erosion to be visible?, hours, days, weeks, timescale varies, What is absolute relative age, a method to know how old is, a method to know the quality of the rock based on how old it is

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