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If a person were ever face-to-face with a huge, hungry animal with sharp teeth, they probably wouldn’t care exactly what that animal was! But from a safe location, can we tell whether it was a crocodile or alligator that wanted to take a bite? By examining their jaw structure, teeth, and other physical features, we can easily tell these two animals apart! Graphic organizers and amazing images highlight each animal’s habitat and other small differences between the two fearsome creatures, showing readers just what creature is lurking below the waters.

David Cordingly es licenciado en Historia por la Universidad de Oxford y doctor por la Universidad de Sussex. Trabajó durante doce años en el Museo Marítimo Nacional de Londres, del que fue conservador y director de exposiciones. Es una autoridad en historia marítima y ha publicado diversos libros sobre pintura naval inglesa y holandesa y sobre historia de la piratería, entre los que destacan Maritime painting in England, 1700-1900 (1974), Nicholas Pocock, maritime artist (1986), Captain James Cook, navigator (1994), Pirates: an illustrated history (1996), Ships and Seascapes: an...

From the Carnival celebration in Ponce to El Yunque National Forest, there's a lot to see and do in Puerto Rico. This island territory lies in the Caribbean. Puerto Rico introduces the state's history, geography, climate, economy, people, and places. Easy-to-read text, vivid images, and helpful back matter give readers a clear look at this subject. Features include a table of contents, infographics, a glossary, additional resources, and an index. Aligned to Common Core Standards and correlated to state standards. Core Library is an imprint of Abdo Publishing, a division of ABDO.

Introduces the concept of heat, how it's created, how it affects materials around it, and how heat is used.