填空题

The second hypothesis concerning the "mapping" ability of birds proposes an idea that birds may be able to extract latitude and longitude from______.

【参考答案】

the Earth’s magnetic field
<上一题 目录 下一题>
热门 试题

填空题
German ornithologists proved that birds have a______guiding their navigatory behavior though some biologists argued that it was impossible for birds to sense the weak magnetic force of the Earth.
填空题
The birds that migrate during night begin to develop______when they are quite young.
相关试题