When are elements unreactive

Which are forms of frozen water? check all that apply. dew frost hail rain sleet

Why does earth rotate? because earth is formed from cold gases collapsing due to gravity because the matter in the nebula that formed earth was spinning because earth forms more than 99% of the mass of the solar system because the hydrogen atoms inside the nebula fused to form helium

Light waves can move through , but they travel fastest when they move through a(n) .