Generally speaking, the main difference between animal science or zoology and plant science or botany is their subject, wherein former deals with the animal kingdom while the latter is towards the plant kingdom. Where it all boils down to, the intrinsic distinction between these two fields of science would relate to the differences of their particular subject starting from the cellular characteristics and physiology up to the development of each general living organism group. For example, zoologist has a particular field that studies the migratory nature of the animals wherein botany does not quite so because plants do not move other than in the case of pollination or human intervention.
On the other hand, botanists are studying the food-production capabilities of plants or photosynthesis because this nature is only unique to their subject. Hope this somehow helps.
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.