Serpientes de cerca (Snakes Up Close) 6-Pack

Discover Dinosaurs Spanish Edition. Dinosaurs were reptiles that lived millions of years ago. It was a long time before there were any people on the earth. Scientists have looked at dinosaur bones and found out many things about what they were like. Nobody knows why the dinosaurs disappeared. People have made pictures to show what they might have looked like. What do we know about dinosaurs?

¿Puede un día soleado convertirse en una noche estrellada? ¡Descúbrelo! Las cosas no siempre son lo que parecen...

Provides an overview of combat jets including their design, weapons, equipment, crew, missions, and role in the U.S. Marine Corps. Written in English and Spanish.

Explains, in simple terms, the reasons for skin color, how it is determined by heredity, and how various environmental factors affect it.