Dona Herweck Rice 
medio ambiente [PDF ebook] 
Un mundo de cambio

The Earth is always changing! But these changes are a part of the cycle of life. Learn about the water cycle, the rock cycle, natural disasters, and adaptations with this Spanish science reader that features easy-to-read text and introduces students to important scientific concepts and topics. Nonfiction text features include a glossary, index, and detailed images to facilitate close reading and help students connect back to the text. Aligned to state and national standards, the book also includes a fun and engaging science experiment to develop critical thinking and help students practice what they have learned.