What is in area 51

WILL GIVE BRAINLEST

Salt in oceans comes from and of rocks

Which statement justifies that hydrogen peroxide (h2o2) is a polar molecule? the o – h bond is nonpolar and the molecule is asymmetric. the o – h bond is nonpolar and the molecule is symmetric. the o – h bond is polar and the molecule is asymmetric. the o – h bond is polar and the molecule is symmetric.

Which method would be best to separate a mixture of sand and gravel