salt is excluded from sea ice and icebergs when the water freezes. what happens to the density of surface water when sea ice and icebergs form?

your spelling is a little off : ]

and after water is usually warmed by the sun the water temperature raises and then evaporates .

yes

no

blue is scattered more than other colors because it travels as shorter, smaller waves. this is why we see a blue sky most of the time.

i think the answer is composed of atoms