This book answers the questions: What are coal, oil and natural gas? What are fossil fuels made of? How do we get fossil fuels? How do we use fossil fuels?
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Usar El Aire This book answers the questions: What is air? What is air made of? How do we know air is all around us? How do we use air? Can we run out of air? How do we clean air? Who studies air? It also includes an activity about air.
Usar De Nuevo Y Reciclar In this book, children learn about reusing and recycling common household materials including paper, glass, plastic, and metal.
Usar Las Plantas This book answers the questions: What are plants? Do all plants look alike? What do plants need to grow? How do we use plants?
