I need to choose a topic that has to do with optics and biology or optics and chemistry. I cant think of any topics?

Biology + Chemistry seems to be an infinite amount of topics. You could read up on how the immune system identifies pathogens. Or how DNA is copied.

Or how DNA is read. Or how proteins are made. Or how muscles or neurons work.

Or why your nails are inelastic and strong while your blood vessels are flexible. Or how gases that you breathe get into your blood. How molecules in the blood trap oxygen and release it to body parts that need oxygen.

Or how hormones act on various parts of your body. The list is truly endless. Google or YouTube some videos on basic biochemistry or molecular biology and try to follow the basic concepts.

Perhaps give this one a try; it's very central to biology, which is ultimately all chemistry when you get down to it. Https://www.youtube.com/watch?v=8kK2zwjR... They are simple if you listen carefully. Good luck!

Biology and chemistry - glycolysis and respiration.

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.