PLEASE HELP WITH THIS QUESTION

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.

Here's one way to follow the scientific method. place the missing steps in the correct position in the process.

Which structure in the cardiovascular system connect arteries to veins?