It may be that fireflies first started glowing to warn off predators that they contain a toxin and taste horrible.

Why fireflies flash

Gardening and horticulture news and tips, as well as agricultural information from Amanda McNulty, the host of SCETV's "Making It Grow" and Clemson University Extension Agent. Produced by South Carolina Public Radio.Making It Grow Minutes are produced by South Carolina Public Radio, in partnership with Clemson University's Extension Service.

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Why fireflies flash

Why fireflies flash

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