Examines the various species of predator fish in the oceans and fresh waters of the world including piranhas, tiger sharks, barracudas, gulper eels, and great white sharks.

Mis primeros conocimientos es una maravillosa e innovadora biblioteca que introduce a lost pequenos de una forma divertida en lost temas de consulta basicos.

Describes what energy is, where it can be found, and how it is used in everyday life.

How will global warming affect future immigration? Why do refugees leave their countries? What is a visa? Presents information about topics through charts and graphs. Shows how to organize data in different visual forms, and how to interpret and create tables, line graphs, bar graphs, and pie charts.

Introduces to facts and explanations about the animal kingdom and the natural world.

Examines the principles of genetics and how scientists apply their knowledge to the fields of medicine, archeology, botany, and agriculture.

Explains how cells form the building blocks for a vast diversity of life.