Answer A lot. Physiology will teach about the function of animals and their parts. This is very important, so you know about the animals you take care of and about parts affected by certain illnesses and injury.
Biochemistry is the chemical processes of living things- digestion, defecation, blood, etc.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.