About the book: 2017 / This book contains 99 secrets of biology. Open it and learn about how plants and animals, humans, and the tiny inhabitants of the microworld work. Pictures, photos and cross-sectional diagrams of things will show you how things work. Funny and simple texts will tell you about what future people will look like, why not all living beings have a smile, why Australian animals need bags, how many kilograms of microbes live inside a person. Long live science without tediousness and unclear terms!