Polar bears one of the largest and most dangerous hunters in the cold regions of the North. Their bodies are built for winter and they do best in the coldest areas. Unfortunately, polar bears are becoming threatened due to changes in the world''''s c limate. How does global warming affect polar bears? What must be done to save them?

Autor	Waring, Rob
Editora	CENGAGE LEARNIG
ISBN	1424022258
EAN	9781424022250
Categoria	Estudo de Línguas Estrangeiras / Geral
Assunto	Inglês
Páginas	24
Número da Edição	1
Ano da Edição	2009