Humans or no, environments can change quickly and drastically, causing certain genetic characteristics to quickly become favored for survival and reproduction.

Humans or no, environments can change quickly and drastically, causing certain genetic characteristics to quickly become favored for survival and reproduction. Evolution is all about generational adaptation to changing environments. When the environment changes quickly, evolution can happen quickly. Populations simply disappear if the necessary adaptations cannot occur quickly enough. https://www.sciencedaily.com/releases/2013/04/130409095414.htm https://www.sciencedaily.com/releases/2013/04/130409095414.h... https://www.discovermagazine.com/the-sciences/rapid-evolution-changes-species-in-real-time https://www.discovermagazine.com/the-sciences/rapid-evolutio...