Azul

¡Averigua cómo era la vida a bordo de un barco pirata con este libro tridimensional y sus piezas extraíbles!

¿Sabías que la gente puede excavar y utilizar el calor de la Tierra para producir energía? Esta energía geotérmica puede alimentar tu computadora y calentar o enfriar tu hogar. Pero, ¿cómo se obtiene exactamente? ¿Y cuál es el impacto sobre el medioambiente? Lee este libro para aprender todo sobre la energía geotérmica. Did you know people can dig underground and use Earth's heat to make energy? This geothermal energy can power your computer and heat or cool your home. How exactly do we get it, though? And what is the impact on our environment? Read this book to find out all about...

3 million years ago, men built the first stone tools for hunting. 2 million years ago, men walked in a completely upright position and had already discovered fire. 1 million years ago, men organized themselves in groups... Okay, okay, but what about the women? Where were the women in the meantime?

Many insects hatch from eggs and molt several times as they grow bigger. Others, such as butterflies, undergo a complete metamorphosis. A common science curriculum topic, insect life cycles may be confusing because of these differences. However, this book breaks down these cycles into easy-to-understand steps in both accessible language and colorful diagrams readers can turn to for review again and again. The most important vocabulary needed to talk about insect life cycles is further explained in fact boxes and an extended glossary.