The human microbiome contains over 10,000 different species of bacteria that help with digestion, immunity, and mood.
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In 1909, Robert Millikan measured the charge of the electron in the oil-drop experiment.
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The Cavendish experiment measured the density of the Earth using lead spheres.
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Venus has a thick atmosphere that traps heat.
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The electric motor converts electrical energy into motion.
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The Earth's atmosphere scatters sunlight.
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Giant tube worms live near hydrothermal vents and rely on symbiotic bacteria for energy.
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Tardigrades can survive extreme radiation, freezing, and even space.
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Venus has surface temperatures hot enough to melt lead.
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