What is probability? this is on my science test but i can't find it on my reference sheet

What causes an unsaturated fatty acid to have a different shape than a saturated fatty acid? o a. unsaturated fatty acids have more hydrogen atoms. o b. unsaturated fatty acids have double carbon bonds. o c. unsaturated fatty acids have more nitrogen atoms. o d. unsaturated fatty acids have single carbon bonds.

Hurry where is the majority of earth's water found? o glaciers o oceans ground o rivers and lakes

Which of the follow describes a disadvantage secondary sources have compared to primary sources?