|
- 积分
- 17983
- 威望
- 17983
- 包包
- 26159
|
 " M( A! P2 N+ O! Y1 R
COVER A young polar bear (Ursus maritimus) on a piece of ice
5 V1 |4 t, S- e4 o, l% Pthat is drifting in the Barents Sea, northeast of Svalbard, Norway. Polar bears 4 A9 O2 W @$ ~4 z9 J
depend on sea ice as a platform for hunting seals, but current melting and
0 g$ r9 |2 L4 m* ~retreat of sea ice is increasingly forcing them onto land. A recent study has 5 @: I9 C& w. H2 R& b" E) l
found polar bears to be evolutionarily older and genetically more distinct than , s& L+ {' n0 G5 o# C- ~
was previously thought. See page 344. Photo: 4 d9 ~% N5 Z- C/ M+ e
Florian Schulz, www.visionsofthewild.com
' v _- R `, y% I/ ?! s[hide][/hide] |
附件: 你需要登录才可以下载或查看附件。没有帐号？注册
-
总评分: 威望 + 40
包包 + 40
查看全部评分
|
发表于 2012-4-21 14:05
