"This . . . book will introduce young people to the . . . world of biologists and the interesting work that they do. Readers will learn about the details of their daily work, including the tools and instruments they use. They will also learn about what kind of schooling is necessary for the job. The book goes into detail about the major branches of the field, giving readers a firm understanding of who biologists are and what they do to change the world"--Provided by publisher.