2Every living thing has a life cycle: a beginning, a middle, and an end to their lives. Learn about the unique life cycles of different living things, such as plants, birds, and mammals, and what they have in common with each other. Life Cycles is part of Decodables by Jump!, a comprehensive library of decodable leveled readers that follow a sequenced approach to phonics instruction. Young readers will enjoy colorful, photo-packed nonfiction as they follow a prescribed format supported by the science of reading that encourages reading development.