The coldest regions of Earth are some of the most fascinating places, and are home to a variety of lifeforms.?Polar Regions of the Earth?provides students a comprehensive look at these frigid environments as well as the unique animals that survive there. The book can also be used to teach students how to compare and contrast and the purpose of captions in a book.The coldest regions of Earth are some of the most fascinating places, and are home to a variety of lifeforms.?Polar Regions of the Earth?provides students a comprehensive look at these frigid environments as well as the unique animals that survive there. The book can also be used to teach students how to compare and contrast and the purpose of captions in a book.