Answer: Psychology is a science because it follows the empirical method. It is this emphasis on the empirically observable that made it necessary for psychology to change its definition from the study of the mind (because the mind itself could not be directly observed) to the science of behavior.
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Water can act as a acid or a base
<h2>Answer with Explanation </h2>
I have been as of late pondering, on the off chance that I take a sufficiently incredible vitality source (photon) and I have an ideal mirror precisely before it and expect a "producer" shot the light towards the mirror. As impeccable mirrors assimilate no vitality of ANY sort from photons, should this imply the ideal mirrors could never move because of exchange of force of the light? it depends on the mass of the mirror, obviously. Your ideal mirror would have a vast mass, in which case it could assimilate the force change, without engrossing any vitality. A reflection of limited mass will ingest some vitality in a crash that will change the vitality and along these lines the wavelength of the photon. There is no logical inconsistency here.
It goes
Cell -> Tissue -> Organ -> Organ System -> Organism
So the answer would system level :)