Earth. Children's encyclopedia

Earth is the only known place in Space, where there is life, and this life is very diverse. What lies under the earth's crust? How there are mountains, glaciers, volcanoes and the Northern lights? Who dwells in the depths of the ocean, arid deserts and the eternal snows? What dangers threaten our planet and can we do against them?
In this book you will find answers to the most fascinating questions about planet Earth.