依靠地球磁场导航运动的生物大多带有迁徙性,比如:
大雁、天鹅、鸽子、某些蝶类等
依靠电磁场导航运动的生物有:
鲨鱼(捕食时会依靠静电磁场感应猎物)、电鳗(交流或寻找配偶)等
猜你喜欢
- 1口技一文中?
- 2去看牙医——用英语怎么说
- 3I saw lots of s_____ pictures of the Wenchuan earthquake .
- 4There are three kinds of goals:short-term,medium-range and long-term goals.Short-term goals are those that usually deal
- 5化简:(2a+1/a²-1)*a²-2a+1/a²-a-(1/a+1)
- 6It's fun ____________(see) all my friends.
- 7【英语翻译】今天比昨天冷得多
- 8一立方土的重量在多少之间
- 9Is his home on the 2nd floor?否定形式回答是什么?
- 10汽车质量是800千克,每个轮胎与地面的接触面积是200平方厘米,则小汽车对地面的压强是多大,