Science is limited to only providing answers that are observable, testable and repeatable. Most scientific concepts such as evolution or creation are based on faith.
Ocular dominance, sometimes called eye preference or eyedness, is the tendency to prefer visual input from one eye to the other. Eye dominance has been categorized as "weak" or "strong"; highly profound cases are sometimes caused by amblyopia or strabismus.
Sometimes we say that overpressure can be origin of kidneys.