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Provides The History Of Biofuels, Different Uses, Positive And Negative Characteristics, And How They Will Impact The Future.

Eco-Friendly Energy Is Explained. The Most Current Information Is Provided While Establishing The Understanding That It Does Not Take Much To Make The World A Better Place.

Defines levers, explains their functions, and suggests simple experiments to demonstrate how they work.

Where did the sunflower come from? How does it grow so tall? How can its thin stalk support such a large and heavy head? These and many other questions are answered in this dazzling book. Using lushly detailed illustrations and photographs, the book takes us inside the sunflower to examine its stem, root system, leaves, and flowering heads, proving an understanding of this unique plant's structure, growth, flowering, reproduction, and cultivation.

Offers complete coverage of Chile, including sections on history, geography, wildlife, infrastructure and government, and culture.

Students will learn all about geometric shapes while engaged in reading about Greek Gods and Goddesses, mythology, and the constellations. This Spanish book uses real-world examples to teach math concepts, and incorporates nonfiction reading to increase vocabulary and comprehension skills. The practice problems, graphs, and sidebars provide many opportunities for students to practice their developing math skills, and apply what they've learned to their daily lives. Essential text features like a glossary, index, and table of contents will increase students' interest level and their...

MANUAL FOR COMMUNITARIAN SOCIAL WORK - This book is a basic document for students and professionals of the different disciplines of Social Sciences related to community action: social workers, socio-cultural animators, social educators, psychologists, etc., who want to develop their professional activity in this collective ambience, professionals who believe in what they do and why they do it, and who are willing to accompany the community and its members in a process of change and growth.