phon/phono, sound, photo, light, gram/graph, written or drawn, meter/metr, measure, tele, distant, micro, small, scope, to watch or see, bio, life, derm/derma, skin, astro/aster, star, techn, skill, art, or craft, geo, earth, phys/physio, nature, physical, therm, temperature, hydra/hydro, water.

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