Life on earth is characterized by two apparently contrasting qualities: diversity and similarities.
An organism’s environment is not only composed of inanimate physical-chemical conditions, but also of the other (living) organisms around it.
Nature’s ecosystems are rife with coevolution relationships.
Every human being, like every other living organism, retains from its evolutionary past a “chimera” of genes and other genetic elements, like stars emitting light across the different evolutionary periods of their near or distant ancestors.