Question

Why do fire flies glows at night?

Answer 1

Answer:

Fireflies mostly only glow at night because that's when the males are trying to get the attention of female fireflies, according to entomologist Dr. Sandy Smith.

Answer 2

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Fireflies produce a chemical reaction inside their bodies that allows them to light up. This type of light production is called bioluminescence. ... When oxygen combines with calcium, adenosine triphosphate (ATP) and the chemical luciferin in the presence of luciferase, a bioluminescent enzyme, light is produced.