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أدوات الموضوع | انواع عرض الموضوع |
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11-23-2018, 02:00 PM
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Slow Arctic freeze raises risk of polar bear extinction, say scientists
Record absence of ice after freak warm spells denies pregnant bears birthing dens and triggers ‘extirpation event’ warning
A record slow freeze of many regions of the Arctic this winter is making it harder for pregnant polar bears to find birthing dens. The delayed formation of sea ice during autumn has worried biologists, who fear a first “extirpation event” – the local extinction of a species – may be approaching faster than forecast for the most affected populations. Continue reading... 
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| الكلمات الدلالية (Tags) |
| birthing, pregnant, ice, dens, record, slow, –, bears, freeze, arctic, extinction, polar, forecast, fear, biologists, worried, sea, autumn, affected, “extirpation, reading, formation, populations, approaching, continue, event”, local, species, faster, warm, freak, spells, denies, absence, risk, raises, bear, scientists, triggers, ‘extirpation, harder, winter, event’, warning, regions, delayed |
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المواضيع المتشابهه
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| الموضوع | كاتب الموضوع | المنتدى | مشاركات | آخر مشاركة |
| ساعة ذكية ماركة بولر Polar باللون الازرق لقياس النشاط اليومي | مزاد rss | إعلانات ودعم | 0 | 08-23-2015 05:36 PM |
| للبيع دباب 2009 Big Bear | مزاد rss | إعلانات ودعم | 0 | 02-13-2011 08:30 PM |
| China raises interest rates to curb inflation | eshrag | القناة الإخبارية - أخبار | 0 | 02-09-2011 11:21 PM |
| ResiDent eViL eXtinCtion [2007] - psp FuLL sCreen | Demonoid | المنتدى العام - مواضيع عامة | 0 | 09-30-2007 05:21 PM |
| حصريا Resident Evil 3: Extinction (2007) | MiChLe | المنتدى العام - مواضيع عامة | 0 | 09-29-2007 12:24 PM |
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