Question

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Answer 1

Answer:

Fire flies have a special kind of substance, i.e. luciferin that undergoes oxidation in the presence of air and an enzyme. This reaction is accompanied by emission of light. Therefore, fire flies glow at night.

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Answer 2

$\huge\bf{Answer:}$

Swallowtails that belong to a group called Princeps nireus actually have fluorescent wings. This means that when the wings absorb a special type of light, called ultraviolet light (or “black light”), they give off a bright blue-green glow.