The four postulates that changed how we see the world.
2. Some of these variations are passed along to offspring
3. In every generation, more offspring are produced than can survive
4. Survival and reproduction are not random; those with favorable variations survive and go on to reproduce
Simple, yet complex.
As a survival instinct, more offspring are produced than those that are expected to survive. Meaning that if a pair of wolves have seven offspring, it is not because all seven will survive, but because some casualties are expected. In the wild we have predators, lack of food, weather conditions, etc, that may end up killing the great majority of these offspring. As once Ms.Leal told me ''Es mejor que sobre a que falte.''