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; an
This nonfiction science reader will help fifth grade students gain science content knowledge while building their reading comprehension and literacy skills. Thi
Earth's atmosphere plays a very important role in sustaining life on the planet. The atmosphere is made of a very thin layer of air, which covers every inch of
" ... Concise explanations and descriptions - easily read and readily understood - of what we know of the chain of events and processes that connect the Sun to
From Stonehenge to the Bermuda Triangle, there are many places on Earth that remain a mystery to scientists! Readers will discover these curious places--and mor