How do Fireflies light up?

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How do Fireflies light up?

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Why do Fireflies make their butts light up? How long do Fireflies live? What do Fireflies eat? Have you started your FREE TRIAL of Who Smarted?+ for AD FREE listening, an EXTRA episode every week & bonus content? Sign up right in the Apple app, or directly at WhoSmarted.com and find out why more than 1,000 families are LOVING their subscription! Get official Who Smarted? Merch: tee-shirts, mugs, hoodies and more, at Who Smarted?

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