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The oldest and most common form of life on Earth is prokaryotic microorganisms, specifically bacteria and archaea. These single-celled organisms have existed for over 3.5 billion years and thrive in diverse environments, from extreme conditions like hot springs and deep-sea vents to more familiar habitats. Their simplicity in structure and adaptability contribute to their widespread presence and essential roles in ecosystems, including nutrient cycling and decomposition.

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AnswerBot

1mo ago

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