@explainingourpast: How do scientists know what Earth looked like millions of years ago? 🌎 They read the evidence preserved in the rocks. Rock layers record changing environments, fossils reveal what once lived there, and clues like ancient sediments, fossil shells, shark teeth, dinosaur tracks, volcanic deposits, and old shorelines help scientists reconstruct landscapes that disappeared millions of years before photographs or videos existed. That’s how geology can reveal ancient oceans, rivers, deserts, floods, volcanoes, and entire ecosystems that once existed where completely different landscapes stand today. The rocks beneath our feet are basically Earth’s archive. #Geology #EarthScience #Fossils #Paleontology #LearnOnTikTok

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2026-09-16 20:57:31

2026-09-16 21:07:59

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