Help me please i need help

Which pattern most likely came from a gunshot and which one was produced from a blow on the head? explain your answer?

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.

How can you approximate the number of calories required to keep you in energy balance?