Submitted by khenkes on Tue, 07/18/2017 - 08:37
Submitted by khenkes on Tue, 07/18/2017 - 08:37
Traces the evolution of birds and discusses the varied sizes, shapes, colors, and habits of some representatives of the over 9,000 species existing today.
Submitted by khenkes on Tue, 07/18/2017 - 08:37
Discusses the land, climate, people, vegetation and wildlife of the North and South Poles, describes several polar expeditions and explains the present and future usefulness of these areas.
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