What Is Earth's Soil Made Of? Introduction to Physical Geology Grade 4 Children's Earth Science

Soil is not just any ordinary dirt. Scientists believe that the soil holds the foundation to ecosystem function. If soil becomes overused and useless, it could lead to catastrophes like a dust bowl. Not many realize that the Earth's soil is also an important natural resource. The purpose of this book is to increase your appreciation of the Earth's soil by first learning of its composition. Grab a copy today.