Singularidad en la poesía de Manuel Ruiz Amezcua

¿Qué tienes que decir cuando contestas al teléfono? Descubre cómo los buenos modales convierten el teléfono en una herramienta útil para todos.

Presents a variety of information on snakes, including the reproduction, the predators of the snake, and other behaviors of the snake.

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.

Why do some things heat up quickly while others don't? How can heat cause matter to change form from solid to liquid to gas and back again? Heat cannot be seen, but it can easily be felt. Looking at different objects' molecular makeup, this book describes the fundamentals of heat and furthers understanding through a series of easy experiments.