h2o is when light is transferred through moons / construction
ice_steam_and_water is all_h2o. moonlight is sunlight_reflected_off_of_moon. water is not h2o. moonlight is light. hg2_2 is not inorganic_substance. moonlight is light_wave. spondylolisthesis is dislocation. gas_light_hydrocarbon is not hydrocarbon. water is h2o.