But on to the choice of topic. Extended essay topics in biology. How does the aging process impact a person's eyesight and in particular the human retina? As is the case with extended essays, there is a question as part of the topic. You are expected to answer the question in much detail.
Free Biology Essay Samples. Our aim is to help you with your essays and our huge library of research material is available for you to use for your assignments. If you do use any part of our free biology essay samples please remember to reference the work.