every 102 years
Suppose the cicadas come out every C years and a predator comes out every P years. Then the life cycles of the predator and the cicadas will coincide every LCM(C, P) years. The predator will want it to happen as often as possible while the cicadas want that to happen as seldom as possible. If C is co-prime with P then the cycles coincide after CP years - which is best for the cicada.Suppose the cicadas come out every C years and a predator comes out every P years. Then the life cycles of the predator and the cicadas will coincide every LCM(C, P) years. The predator will want it to happen as often as possible while the cicadas want that to happen as seldom as possible. If C is co-prime with P then the cycles coincide after CP years - which is best for the cicada.Suppose the cicadas come out every C years and a predator comes out every P years. Then the life cycles of the predator and the cicadas will coincide every LCM(C, P) years. The predator will want it to happen as often as possible while the cicadas want that to happen as seldom as possible. If C is co-prime with P then the cycles coincide after CP years - which is best for the cicada.Suppose the cicadas come out every C years and a predator comes out every P years. Then the life cycles of the predator and the cicadas will coincide every LCM(C, P) years. The predator will want it to happen as often as possible while the cicadas want that to happen as seldom as possible. If C is co-prime with P then the cycles coincide after CP years - which is best for the cicada.
They are called cicadas (seh-cay-da) and they lay eggs in the ground and the larvae come out every 7 years.
A group of cicadas is called a "brood." Cicadas are known for their synchronized emergence in large numbers, typically every 13 or 17 years depending on the species. These periodic mass emergences are a survival strategy that overwhelms predators and increases the chances of successful mating for the cicadas.
Every 4 Yrs
no
Cicadas do.
Every four years.
Halleys comet comes back around every 76 years.
Brood 2 cicadas do not get eaten underground. They stay underground for many years and then come up through the ground. The can and do get eaten once they emerge. Animals and birds will eat them.
some are but it depend what species you are talking about.
April-october