The emergence of one species from another occurs when the two groups can no longer interbreed. Such reproductive isolation is considered a key evolutionary process, and yet our knowledge of the mechanisms and mutations by which it actually occurs has...
There, scientists can make casts, or reproductions, of the bones and try to recreate the complete skeleton. Scientists can learn a lot from this process: The way the bones fit together gives a basic idea of the dinosaur's shape and posture. Flat, leaf-shaped teeth mean that the dinosaur ...
the study found that people feel judged to a larger extent by members of other groups. because of this, they strategically use healthy food choices to make a positive impression. there have been many attempts to help c...
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Here at National Geographic Kids, we know how much our readers want to make a positive difference to our world! So, read on to find out how to save the planet… 1. Be a habitat hero! All over the world,wild places are in trouble. As the humanpopulation has increased, we’ve taken...
01参考答案1.C) Thought something wrong with the driver.2.A) Buy a sports car.3.B) Alter human skeleton.4.C) It hardens.5.D) Hold a birthday party for him.6.B) Regular visits to the village shop.7.A) Fond of luxu...
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How to Make A Terrarium: Turning Tiny Ecosystems Into a Blooming Business When it comes to sprucing up a home, one item in particular is a home décor staple: plants. But if you’re like me and don’t exactly possess a green thumb, then learning how to make a terrarium can be a ...
findhowwelearnandmakedecisionsexactly.Tothebrain,anewthoughtorideaislikeaspider.Ifitworkshardenough,awebofknowledgespinsoutfromit.Photosofthebraintakenduringlearningactuallyshowakindofnervecellsfiring,growing,andformingnewconnections.Thisisfascinatinginitself,butwhat’sevenmorefascinatingisthatfailurecancausethisto...
If a predatorHow does an ecosystem(生态系统) work? What makescan eat several species,it can survive the extinction(灭绝) ofthe populations of different species the way they are? Why areone of them. And if a predator can move on to another speciesthere so many flies and so few wolves?