You can listen to this audiobook in formats: AAC, MPEG4, WAV, FLAC, WMA, AIFF, MP3 (compression LZMA, CBC, ZIP, RAR)
Total pages original book: 32
Includes a PDF summary of 2 pages
Duration of the summary (audio): 3M32S (1.64 MB)
Description or summary of the audiobook: In the Arctic, the summer ice is melting, making it hard for polar bears to survive. Why is the world getting warmer? The heat of the sun is trapped by the -greenhouse- gases that surround Earth-carbon dioxide, methane, nitrous oxide, and water vapor.
Other categories, genre or collection: Natural History Books for Children, Sciences, Wildlife, The Environment