Explains the cyclical relationship between photosynthesis in plants and respiration in animals.

"The sun explains its role in the movement of water around the Earth, from the lifting of fresh water from the seas, to the movement of underwater currents that nourish the world's oceans. The sun has a hand in moving rivers of water in its liquid, gaseous, and solid states all around the Earth, enabling life to exist on our planet. But human beings are interfering in this natural cycle, unbalancing the amount of fresh water available."--

"Without the sun, we wouldn't have bountiful harvests, beautiful flowers, or green forests. The relationship between the sun and plants is complex, fascinating, and altogether necessary for life on Earth. Through colorful photographs, easy-to-follow diagrams, fun facts, and standards-based activities, this book gives readers an inside look at photosynthesis, sun plants versus shade plants, seasons, and so much more. The narrative takes young learners...