- Hello my beautiful friends, at the end of 2 years, my apple of your eye book is with you. While preparing this book, I thought about how I could teach the 6 units of TYT Biology in an enjoyable way. There shouldn't be much information in the book. Useful information should have been given in a way that is neither too little nor too much, completely in line with the achievements of the Ministry of Education. - As you look at the cute visuals on the subject that you will see every time you turn the pages in the book, you should be inspired and enjoy studying biology... - This is why I worked hard and I hope this book will be a turning point for you on the way to learning biology. - You will not need any other resources while studying biology with subject-specific biology codes and tactics, and you will study biology with pleasure without getting bored. - You will understand the subject better with the tutorial and student questions at the end of the chapter and unit. On my Betül Biology YouTube channel, every topic, every question, every line of the book will be explained one by one and supported by my video lectures. - I hope that this book will be very useful for my 9th and 10th grade friends to use in their school classes, for my 11th grade students who will start studying for TYT Biology, and for my 12th grade students who are preparing for the exam. - It is a pleasure to accompany you... Betül Biology