Nature's Cycles in Review

Oxygen is essential to life on Earth. It's produced through photosynthesis and moves through human bodies, water, and Earth's atmosphere. How exactly does that work? Through accessible language and full-color diagrams and photographs, this book explains the oxygen cycle. The text is designed to appeal to readers of all levels, particularly those struggling to understand a standard text book. Fact boxes and an extended glossary allow for the inclusion of the most important science vocabulary so all readers have the ability to understand, speak, and write about the topic.

What happens in space has an influence on our lives. As Earth moves around the sun, the seasons on Earth change. The movement of the moon affects the tides in Earth's oceans. In this book, readers explore the cycles in the space that most affect us and the space science taught in upper elementary science classes. Accessible language and simple explanations make this the perfect introduction to Earth's cycles for readers struggling with traditional textbooks. Colorful photographs, fact boxes, and graphic organizers add interest to the text.

Did you know that about 18.5 percent of a human body's mass is carbon? All life on Earth depends on carbon. How carbon is taking in and given off through animals' breathing, the burning of fossil fuels, and more can be shown in the model known as the carbon cycle. In this informative and interesting book, readers will discover how the carbon cycle works. Designed to appeal to struggling readers, helpful diagrams are provided to clarify complex concepts and fascinating fact boxes add interest to the text.

Food chains and food webs are a crucial part of life on Earth. In this educational and informative book, readers will study how all organisms in an ecosystem are connected. Some are predator, some are prey, and others are just there to help decomposition. Written for struggling upper elementary readers, the main content highlights the most important points, as well as the essential vocabulary relating to food chains and webs. Full-color photographs, fact boxes, and graphic organizers aid readers' comprehension of this key life science concept.

This informative book is designed to help struggling readers grasp the nitrogen cycle. There are many steps in the nitrogen cycle that include difficult concepts and words: denitrification, prokaryotes, ammonia, and more. Low-level language, fact boxes, and an extended glossary provide readers with key vocabulary explanations that allow them to further understand each step of the cycle. Full-color diagrams aid readers' comprehension as they move through the cycle from start to finish. A must-have for science students.

What exactly is the water cycle? How does it work? The water cycle model helps us understand how water changes form from liquid to solid to gas and how water continually moves on Earth. This informative and thorough text is designed to educate students about this key scientific concept. Using helpful graphic organizers and fact boxes to highlight key information, this book aims to bring all learners up to speed on the basics of the water cycle, from precipitation to evaporation. Diagrams and full-color photographs complement the low-level text and simply stated science information.