The publication discusses in detail all aspects of the rational use and protection of water resources

В книге сконцентрированы основные положения по химии. Много внимания уделено "химическому языку" - формулам и уравнениям, разнообразным химическим расчетам

В интересной , доступной форме автор рассказывает об экологических условиях, в которых формировалась группа морских млекопитающих, и характеризует ее отдельных представителей

The book includes colour plates, photographs taken by naturalists who have spent several occasions in the wilderness recording these event

This book is about the situation on our planet. What would be if the polar ice caps melted

Ideal for today`s young investigative reader, each A True Book includes lively sidebars, a glossary and index, plus a comprehensive "To Find Out More" section listing books, organizations, and Internet sites. A staple of library collections since the 1950s, the new A True Book series is the definitive nonfiction series for elementary school readers

This series will make readers wonder what might happen if particular events occurred. Grounded in fact, each book assesses the possibility or threat of an event, from melting ice caps to a fuel shortage. Each book also offers suggestions on how to respond to these environmental and ecological challenges before it

This series will make readers wonder what might happen if particular events occurred. Grounded in fact, each book assesses the possibility or threat of an event, from melting ice caps to a fuel shortage. Each book also offers suggestions on how to respond to these environmental and ecological challenges before it