Growing up the adults around me, family and friends, claimed „I always had the best of everything.“. Learning about the shades and colors of abuse, I know now that isn’t true. Thou it is difficult to prove the individual incidences, because they were simply family life. The fact that I grow up to be functionally infertile proves that the environment my parents created was inapt for humans.
Different species are suitable to inhabit different ecological niches. Humans are a very adept species. We went from caves to tower blocks, inhabiting all climates, all around the world.
An ecological niche is determined by the total of environmental factors that need to be favorable for the need of any given species. Oxygen levels , for example, need to be high enough that we can breath, but if they are too high it will react badly with our molecules and disintegrate them. Temperature, shall not be too cold or we’d freeze to death, nor should it be too hot or our proteins will aggregate. There are many such parameters, but you get they idea.
If you would test one species for any of its environmental factors, you would find that it often creates a bell curve. If you’d place worms for example on a strip with temperatures from left to right steadily increasing. Most worms would gather at moderate temperatures. This would be their optimum. There’ll be fewer worms at 10 and 30°C respectively. Really they would only go there if was more space at mordent temperatures.
Because in less then favorable conditions they first lose the ability to reproduce. From there on they exist in a tolerable state. If conditions worsen, they’ll die.
All factors need to be favorable for individuals to be healthy. There are many examples of zoo animals that we are keeping, like our selfs, in artificial environments. For many decades zoos struggle to have cheetahs babies in captivity. Until biologists further understood that cheetahs live by themselves except during pairing season. Since zoos implemented this knowledge onto the conditions they keep cheetahs in, many baby cheetahs have been born in captivity.
In conclusion, humans can live and reproduce in caves but not my childhood home. The sum of environment factors that were set and controlled by my parents, let me grow up in the tolerance range.
