Periodical cicadas, or magicicadas, are made up of 7 different species, and have very regular resurfacing cycles. Some appear every 17 years, while others appear how often?
Answer 13 years
Periodical cicadas are unique, because unlike the over 200 other species whose young are hatched underground and emerge randomly when they're young, the seven periodical cicada species emerge as adults all at once in the same year.
Asked by Tom Cohen · Last updated 5 years ago · 279 views
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