Economy

Why do cicadas have such an unusual life cycle?

.TYPE IS Curing Americans to all sort of eyeglasses. On April 8th millions observed a complete solar energy eclipse. Many will be less mesmerized when, in the coming times, mountains of cicadas seem in the nation's Midwest and south-east. The swarm will definitely be actually uncommonly large since 2 kinds of the bug-- Brood XIII as well as Family XIX-- are actually developing all at once. The last opportunity they showed up all at once resided in 1803, when Thomas Jefferson was actually president. Why do the cicadas possess such an unusual life process?