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The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2
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What is the average speed of a car that traveled 300.0 miles in 5.5 hours
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Identify two examples of chemical reactions that you have encountered during the last week. identify an exothermic and endothermic reaction. explain.
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