Why do scientists use both ancient Earth rocks and meteorites to understand Earth's early formation?

Earth’s surface is continually changed by processes such as plate tectonics, melting, and erosion, which can erase evidence from its earliest history. Many meteorites have remained relatively unchanged since the solar system formed, so they preserve clues about the materials that built Earth. Therefore, the correct choice is “Meteorites preserve information lost on Earth due to tectonic activity.”

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