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- 积分
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+ n3 R3 U; L# P7 K. MCOVER A young polar bear (Ursus maritimus) on a piece of ice
& {+ A/ `# @ P& @ Cthat is drifting in the Barents Sea, northeast of Svalbard, Norway. Polar bears 0 {9 p9 M$ Q' t" f* V
depend on sea ice as a platform for hunting seals, but current melting and # q, N _+ H& Y
retreat of sea ice is increasingly forcing them onto land. A recent study has 8 \ q: L0 o% q' E
found polar bears to be evolutionarily older and genetically more distinct than
8 r/ K( W' q: W8 A6 l* E. t- swas previously thought. See page 344. Photo:
. I5 P" F, N- ~$ [ \" l5 K, x$ x% OFlorian Schulz, www.visionsofthewild.com
( [ s/ {3 C4 b9 g[hide][/hide] |
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