Why Fireflies Glow During Summer Nights?

Question

what makes them glow?

Answer 1

Fireflies are sometimes called lightning bugs.

Fireflies contain an organic compound in their abdomens called luciferin. As air rushes into the abdomen, it reacts with the luciferin. A chemical reaction gives off the familiar glow of a firefly. This light is sometimes called “cold light” because it generates so little heat. The firefly can regulate the airflow into the abdomen to create a pulsating pattern.

Comments

It typically seen as the summer time staple owing to their thriving power in warm and humid environment, there are around 2000 species of insects that glow in the night.

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thank you so much for the answer