What role do microorganisms play in cycling materials through an ecosystem, particularly in returning carbon and mineral ions to the atmosphere and soil?

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How does the water cycle provide fresh water for plants and animals, and what happens to the water once it drains into the seas?

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What is the role of the carbon cycle in returning carbon to the atmosphere, and how do plants use it in photosynthesis?

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How do materials cycle through both the abiotic and biotic components of an ecosystem, and why is this process important for living organisms?

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What impact have advancements in scientific methods had on the development and refinement of classification systems?

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How do evolutionary trees help scientists understand the relationships between living and extinct organisms?

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What is the three-domain system developed by Carl Woese, and how does it categorize organisms into Archaea, Bacteria, and Eukaryota?

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How has the Linnaean classification system evolved over time, and what role have improvements in microscopes and biochemical understanding played in this development?

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How did Carl Linnaeus classify living organisms, and what is the significance of the binomial system in naming species?

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What are the challenges associated with developing new antibiotics, and why might it be difficult to keep up with emerging resistant strains?

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