How doe cicadas know its been 17 years and its time to come out?

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Im sitting outside and their noises are deafening me. Got me thinking how do they know its their time to emerge? It’s not that they dig underground, set their apple watch for a 17 year time and roll out of bed when the timer goes off 17 years later. .what is their DNA to give this 17 year nap and know when that time is up?

In: Biology

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Anonymous 0 Comments

Same way the human body know’s it’s time to start growing hair around your naughty bits. You grow to a certain point, and things happen. Same with all animals in the world.

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