Geosphere, hydrosphere, atmosphere, and biosphere-each of these spheres make up planet Earth. From deep below Earth's surface where metals are made to the thermosphere that protects our planet from harmful sunrays, travel through each layer of these spheres to see how every living thing is connected. In this engaging science e-book, fifth grade readers will learn about the lithosphere, mantle and core of Earth's interior; five zones of the hydrosphere; groundwater and surface water; the entire world's ecosystem; and more through this high-interest informational text filled with vibrant photographs. Aligned to the Next Generation Science Standards, a hands-on "Think Like a Scientist" lab activity and a "Your Turn" page at the end of the e-book support STEM Education and provide young scientists with an opportunity to apply what they've learned in the text. Helpful diagrams and text features, such as a glossary and index, are also included to reinforce content-area literacy and improve close reading.