Explain the cicadas’ “safety in numbers” strategy, making sure to mention the factors behind their emergence every 17 years.

mathematics tells us that if there are more organisms in a herd or flock or other groups, each individual is less likely to die.

So if you are guarding a castle and an army of 2000 men is about to attack, would you say if your the only defender that you could survive and scare them off? if there are 3000 defenders you have a much less likely chance of dying. This is why there are herds, flocks, and such because each individual has a less likely chance of dying. the more organisms the more safe.

But I have no idea why cicadas come out every 17 years so please don't get mad.

Hope it made sense

Spiky bob your answerer

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.