What is your favorite subject in school? If it is biology, then this book is what you need!
CAMPBELL BIOLOGY 9TH EDITION is a scientific on biology, released in 2011. In its compilation were participated such scientists as Jane B. Reece, Michael L. Cain, Neil A. Campbell, Peter V. Minorsky and others. The manual consists of 8 units, which include paragraphs. In it you can find everything you might need: the theory of evolution and the origin of species, the structure of plants and animals, ecology and so on. This book can be very useful to you in preparing for tests or exams. But it is useful to read and for general reference to biology.
You can download CAMPBELL BIOLOGY 9TH EDITION for free and get a great store of knowledge.