Mystery #2Tier 2bioluminescence
How does a firefly switch on its own little lantern on a summer night?
On a warm summer night, little green lights drift over the grass and blink on and off like tiny lanterns. They are fireflies, and each one carries its own light with no bulb, no battery and no flame. Cup one gently in your hands and it does not even feel warm. So how does a firefly switch on its glow?
Your guess
Where do you think a firefly's light actually comes from?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
Make a guess to unlock the hints and the answer.