What is the primary evidence used to construct the geologic time scale?, Weather patterns, Rocks and fossils, Human activities, Ocean currents, Which era is known as the "Age of Mammals"?, Paleozoic Era, Mesozoic Era, Archean Era, Cenozoic Era, What major event is indicated by the presence of dinosaur fossils?, The Cenozoic Era, The Precambrian time, The Mesozoic Era, The Hadean Eon, How long ago did the first known life forms appear on Earth?, About 3.5 billion years ago, About 600 million years ago, About 4.5 billion years ago, About 1 million years ago, Which process can lead to the formation of sedimentary rock?, Melting and solidification, Weathering and erosion, Volcanic eruption, Tectonic plate movement, What do scientists use to correlate rock layers and fossil records from different locations?, Absolute dating, Radiometric dating, Relative dating, Thermoluminescence, What does the fossil record primarily provide evidence for?, The composition of Earth's atmosphere, The exact dates of geological events, The size of ancient oceans, Changes in Earth's life forms over time, Fossils can provide clues about past environments and the organisms that lived during those times., True, False, Major geological events, like mass extinctions, are marked in the rock record and can serve as benchmarks for dating layers., True, False, The Precambrian time accounts for nearly 90% of Earth's history, lasting around 4 billion years., True, False, The Cenozoic Era is characterized by the dominance of reptiles, including dinosaurs., True, False, The geologic time scale is a system used to organize Earth's history based on significant events and changes., True, False

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