National Geographic kids. Nivel 2

Looks at dolphins as wild mammals and discusses the need to preserve their natural environment.

Brief text and photographs introduce rocks and minerals, describing the three rock groups, the rock cycle, and what they are used for.

Photographs and text introduce rocks and minerals, covering the rock cycle, fossils, gemstones, and rock types.

Photographs and text introduce kids to different kinds of volcanoes, where they are located, how and why they erupt, and other data about volcanoes.