This document outlines the major branches of biology. It discusses how biology is the study of life and is concerned with all living things. Some of the key branches mentioned include zoology which studies animals, botany which studies plants, ecology which examines relationships between living things and their environments, anatomy which analyzes body structures, and genetics which investigates trait inheritance. The document provides examples of fields like microbiology, ornithology, and entomology that focus on specific types of organisms.