Tundra habitats are some of the harshest places on Earth. They exist in the Northern Hemisphere north of the Arctic Circle and on mountains at high altitude. Bu

Tundra habitats are some of the harshest places on Earth. They exist in the Northern Hemisphere north of the Arctic Circle and on mountains at high altitude. Bu

Forests are growing all over the world. They're one of the most familiar habitats, but they come in some truly bizarre and beautiful forms. Readers will learn c

If you think grasslands are just boring old grass, think again. This high-interest volume is packed with facts about these rich habitats that cover one-fourth o

A mountain goat jumps from one rocky ledge to another a group of arctic hares huddle together for warmth a musk ox uses it hooves to dig for plants in the snow