La reproducción de las plantas (Plant Reproduction)

Interesting facts and experiments explore the dynamics of a race car engine to teach about air flow and drag, safety equipment and roll cages, the fuel system and horsepower, suspension and track bars, internal combustion, why race cars don't have speedometers, how roof flaps are designed like airplane wings, and more.

Describes the physical characteristics, habitats, life cycle, and behavior of different kinds of reptiles, including alligators, turtles, snakes, and lizards.

A grammar reference and activity book, this text provides explanations and practice of spanish grammar for both foundation and higher levels. There are exercises and examples, as well as suggestions for open-ended communicative activities.

Blobfish, pangolin, and flower mantis are just a few of the names of the bizarre bugs and animals that readers will learn about in this fascinating, Spanish-translated nonfiction title. Through vibrant images and photos, informational text, a glossary of terms, and an index, readers will learn some of the strange ways that arthropods, invertebrates, and mammals have adapted over time to camouflage themselves and develop interesting ways to keep predators away.