¿Qué Son Los Trabajos e Ingresos? (What Are Jobs and Earnings?)

Examines the apparent connection between birds and dinosaurs by comparing fossils, dinosaur bones, and modern birds.

"This oversized book introduces children to the alarming number of species that are endangered, threatened or, unfortunately, extinct. It includes amphibians, birds, mammals, reptiles, and fish, devoting an entire page to each animal. Readers will learn the threats facing each one, where each one lives or lived, including the type of habitat, its diet, size, and ongoing conservation efforts."

Los cuentos clásicos han pervivido hasta nuestros días por contar, de manera fantástica, hechos cotidianos en los cuales nos podemos ver reflejados. Cada cuento que aquí aparece presenta diferentes aspectos de la vida real: los sueños, la ingenuidad, la fantasía, el amor, la codicia… A partir de 8 años

When rocks change because of environmental conditions, the new rocks are called metamorphic rocks. A rock's chemical or physical makeup may change because of conditions such as temperature, stress, or pressure. Your readers will learn fascinating facts including where metamorphic rocks are most commonly found, the different types of metamorphism, and how metamorphic rocks are identified. Full-color photographs depict these rocks in nature. A helpful graphic organizer shows how these fascinating rocks form.