解析 夜行性适应、猎物夜间活动、减少竞争分析猫头鹰夜间觅食的原因,需结合其生物特性与生态关系。首先,猫头鹰属于夜行性动物,其视觉和听觉高度适应黑暗环境,如视网膜中视杆细胞发达、不对称耳孔增强声音定位能力,使其能在夜间高效捕猎。其次,主要猎物(如鼠类)多在夜间活动,猫头鹰的觅食时间与猎物活跃期重合。最后,夜间...
二、完形填空(满分15分)了解猫头鹰“Why do owls(猫头鹰) always come out at night?" asked Carl. “Yeah," said Joe. “It's so1 . I'm glad we brought our flashlight. " Joe, Carl and Joe's dad were hiking on a cold night. They were 2 owls."Most owls hunt in the wild at night...
WASHINGTON, April 6 (Xinhua) -- If you stay up late and have trouble getting up in the morning, you might be able to blame a gene mutation for this night owl behavior. Researchers from the U.S. and Turkey have discovered that a variant of the gene CRY1 alters the human circadian clo...
Gene explains why people are night owlsHighfield, By Roger
Most animals hunt when they are at an advantage. The case is similar with owls, who find it advantageous to hunt at night. Centuries of evolution have gifted owls with the right skills to hunt by night. Typical prey includes invertebrates and small mamma
百度试题 结果1 题目Why do owls look for food at night? ___ 相关知识点: 试题来源: 解析 They can see better at night. 反馈 收藏
Their heads have to do most of the rolling-around work. It's also for this reason that owls can turn their heads almost entirely around on their necks.Owls also use sound to hunt. Their ears are lopsided—the left ear is a bit higher than the right ear. A noise goes in one ear ...
Morning people may rise earlier, but night owls are more likely to stay mentally sharp for a longer amount of time after first waking up, which leads to increased productivity and efficiency. If you feel bad about finding it difficult to wake up early, don’t be ashamed! Flaunt your late...
Some people are night owls. Some are early birds. You almost certainly know w (1) one you are. But did you know that there may be a biological r (2) why some people are out of bed so early in the morning w (3) others prefer to stay up late at night? One German scientist beli...
Why don't wild monkeys exist in Europe and North America? Why do ecologists need to be phylogenetically challenged? What is the reason for the black and white stripes on zebras and the orange and black stripes on tigers? Why have certain spiders evolved poison so powerful, one ...