A young woman hears cicadas chirping outside of her window. The last time she heard this noise, she was a teenager in middle school (about 13 years ago). The fact that these insects emerge every 13 years is due to the fact that cicadas have _____ clocks.

Question

Quizplus · Accepted Answer

Cicadas have annual clocks, meaning they emerge from the ground after a period of 13 or 17 years. This cycle allows them to avoid predators and take advantage of the availability of food and mating opportunities.

A Young Woman Hears Cicadas Chirping Outside of Her Window