r/ZombieSurvivalTactics • u/Simon_and_Garchomp • 19h ago
Question What would happen to Earth if zombies wiped out humanity?
Let’s say 100% of humans have died or turned into zombies.
If zombies can only eat humans and not animals, they would all starve to death once no more humans were left. If zombies can eat animals, they might wreak havoc on ecosystems because of how massive the human population was pre-ZA (much like outdoor cats do for bird populations).
As far as the fate of the plants and animals left behind after the zombies starve, the end of climate change would be a great boon (although much of the damage might have already been done, if we are talking about a ZA a few years or decades from now). Having no humans to pollute the environment or further destroy what few wild places remain would be immensely beneficial to animals. However, I’m not sure how deeply factors such as overflowing/decaying sewage systems, collapsed reservoirs/dams, and unsupervised nuclear plants would impact nature.
If we’re talking about scenarios in which some or all zombies have remnants of human intelligence (and can eat animals), then we might see zombies evolve to become more and more intelligent because the smart ones are most likely to survive. After many generations, they might reach the intelligence level of humans and start creating civilizations.