Which statement regarding the properties of water is(are) correct?
1.water is less dense in its solid state than in its liquid state.
2.water is less dense in its liquid state than in its solid state
3.water is less dense in its liquid state than in its gaseous state.
i only
i and ii
ii and iii
i, ii and iii

Why are small quantities of chlorofluorocarbons so harmful to the ozone layer? a. the chlorofluorocarbons act like ultraviolet radiation causing large amount of ozone to be produced. b. the chlorine from the chlorofluorocarbons reacts with free molecules of oxygen causing a stop in ozone production c. free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone. d. chlorofluorocarbons absorb ultraviolet radiation, preventing the formation of ozone select the best answer from the choices provided

How are proteins and nucleic acids related? they both provide energy. they both carry genetic information. the structure of proteins is determined by nucleic acids. the subunits of nucleic acids are also the subunits of proteins.

I’m stuck on this question cuz i’m stupid sksksksk