Which box has the greatest density ? box filled with marbles , box filled with sand , box filled with paperclips or box filled with dice?

As water is cooled from 4 c to 0 c its density

Which city area has the most accessible oil reserves a) caspian sea b) siberia c)arctic coast d)lake baikal

With these question would be nice i needs them in a hurry which nation leads eastern europe in nuclear energy usage? a ukraine b lithuania c slovakia d solvenia which eastern european nation is popular with skiers? a czech republic b estonia c bulgaria d none are