Llamas Ruiz, Andr?s

An illustrated description of the creation, types, stages, and effects of rivers.

An illustrated description of the origin, evolution, and activities of the stars, including the sun.

Describes the stages of development in the life of a tree, from seed to full-grown plant.

Describes the process of evolution, beginning with single-celled organisms and culminating with the appearance of man.

Explains how blood circulates in our bodies and the specific roles that the heart, lungs, and blood vessels play.

Describes the origins and effects of volcanoes and earthquakes, including tsunamis and volcanic islands.

Describes the process of metamorphosis in caterpillars, tadpoles, and dragonfly larvae.

Examines how reptiles and amphibians develop, are born, learn to live, escape from their enemies, and mate.

Describes briefly the most widely accepted scientific explanations regarding the origins of the universe, the birth of stars, and the formation of the planets.

Explains and illustrates the inner workings and body parts of a wide range of animals.