Anything to do with the north and south poles.
Water molecules (and some others) have polar regions.
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Halogen molecules are not polar.
H2O is a polar molecule; +H3O is even more so.
To list a few: peneplain. perihelion. perigee. photoelectric effect. photometer. photon. photosphere. photosynthesis. physical change. piezoelectric effect. pitch. planck's constant. plasma. plastic. polar bond. polar lows. polar molecule. power. precession. pressure. proton. protonosphere. ptolemaic system. pyroxene.
he told that science is science and sciance cannot be science if sceince if science is not science and if science did not come from science the science will not be science
science is science!!