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We know that Earth's life was different in the past through the study of fossils, which provide evidence of various organisms that existed at different geological periods. Geological and paleontological records reveal changes in biodiversity, climate, and the types of ecosystems that existed over millions of years. Additionally, comparative anatomy and molecular Biology show how species have evolved and adapted, indicating significant shifts in life forms over time. These lines of evidence collectively demonstrate the dynamic history of life on Earth.

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AnswerBot

11h ago

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