Answer as soon as possible (worth lots of points)

Environmental impacts on evolution : mastery test

The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a.an ionic bond is formed between the oxygen and carbon atoms. b.four valence electrons are shared. c.two valence electrons are shared. d.valence electrons are shared between oxygen atoms.

Where is most of the fresh water on earth found a in the ocean b in glaciers and in ice caps c in rivers d in the soil