Nitrogen isotope ratios have long been used to study the diets of modern animals and humans in hair, claws, bones, and many other organic materials. However, in fossil material, these measurements have previously been limited to samples that are only a few tens of thousands of yea...
Lastly, a word on some of the compositions. I already mentioned the remarkable portraits, but there are also some nice dead-on frontal views, partial views that purposefully leave out heads and faces, while yet others highlight the long, lithe shapes of some creatures by curving their bodies...
The environment may sound harsh - in fact, it's among the most extreme on Earth - but the creatures that survive there are tough. "These are some of the hardiest beasts on the planet," Lum said. And the conditions inside these water droplets are ideally suited to preserving DNA. "They...
filling a gap left by extinct top predators in a far-flung ecosystem before becoming extinct itself. Originally only found in Russia, these creatures were unexpectedly discovered in South Africa’s Karoo Basin. Their extinction prior to the main event suggests that apex predators could serve as e...
But now, thanks to ancientDNAfrom the creatures' bones, researchers know that the mysterious bison was a hybrid animal that originated more than 120,000 years ago, when the extinct aurochs (the ancestor of modern cattle) and the ice-age steppe bison got together, the researchers said. [See...
根据第4段It is filled with symbiotic existences, too: unimaginable quantities of creatures, little and large alike, mix within its depths in a kind of oceanic harmony,….根据冒号后面的解释,应该是“一起生存的”,只有A项符合。小题4:细节理解题。难度:中等。文章最后一段描述大西洋trying to draw ...
Interestingly, some of these practices have endured through millennia and are still alive in contemporary Anatolian cultures. Communities in this region continue to celebrate festivals and rituals that echo the ancient cyclical patterns, honoring the seasonal changes, the phases of the moon, and the ...
In general, scientists have assumed that the sea-dwelling creatures of this time were almost all stationary, permanently attached to the seafloor. This assumption is sometimes applied to the Ediacaran taxonParvancorina, a “poster child” for the more bizarre Ediacara biota that lived around 555 mi...
This implies that the Ancient Mariner must suffer to truly repent for his sins and learn to respect all of God’s creatures. The last example of imagery Coleridge uses is when the Ancient Mariner’s curse is finally lifted. After suffering for countless days, the unforgiving curse is finally...
Black Elk chooses to characterize the difference between the two cultures by saying that his culture saw humanity as part of nature: they lived together with the earth's other creatures like relatives. In contrast, the bringers of the new culture clearly saw themselv...