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Life & body

Germs, breathing, senses, plants, the body.

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Life & body Storybook Why doesn't a whole town get sick at once? germsspread Open the story Life & body Experiment Why do you breathe faster when you run? breathingbody Try it out Life & body Experiment Why does your heart beat in two thumps? heartblood Try it out Life & body Experiment Does your own hand tickle you as much as a friend's? brainsenses Try it out Life & body Experiment Why do you get dizzy after spinning? earsbalance Try it out Life & body Experiment How does your ear tell a high note from a low note? earssound Try it out Life & body Storybook Why can one bump feel like two? neuronssenses Open the story Life & body Experiment What decides whether a cut heals clean or leaves a scar? skinhealing Try it out Life & body Experiment Why don't your bones snap when you jump? bonesbody Try it out Life & body Experiment How can pulling muscles make your arm push? musclesbody Try it out Life & body Experiment What changes inside your eyes when the lights go off? eyessenses Try it out Life & body Experiment How does oxygen change the ATP a cell can make from glucose? foodenergy Try it out Life & body Experiment Why does your body remember a germ it already beat? immune systemgerms Try it out Life & body Experiment Why does a wound get red and puffy when it's healing? immune systemhealing Try it out Life & body Experiment Is sunlight or water keeping this plant alive? plantsphotosynthesis Try it out Life & body Experiment Where does a giant tree's wood actually come from? plantsphotosynthesis Try it out Life & body Experiment Why did dark moths become more common near smoky cities? evolutionanimals Try it out Life & body Storybook How can respiratory germs find a way in? germscontagion Open the story Life & body Experiment Does a germ’s severity tell us how far it spreads? germscontagion Try it out Life & body Experiment Why can fast breathing hide the warning to breathe? breathingbody Try it out Life & body Experiment Why are two eyes better than one? eyessenses Try it out Life & body Storybook How can one eye miss a patch while the world still looks complete? eyesvision Open the story Life & body Experiment Stare hard at a colored shape, then look away — what shows up? eyescolor Try it out