TaxonomyNew taxaMammaliaAvesPleistoceneGlobalWorldVertebrataQuaternaryVertebrataNo Abstract available for this article.doi:10.1038/315538a0Jared M. DiamondNature Publishing Group UKNatureDiamond, J. M. 1985. How many unknown species are yet to be discovered? Nature 315: 538-539....
Biodiversity, species ranges, and gene flow in the abyssal Pacific nodule province: predicting and managing the impacts of deep seabed mining ISA report (2008) Google Scholar 57 C. Mora, D.P. Tittensor, S. Adl, A.G.B. Simpson, B. Worm How many species are there on Earth and in the...
The program is to help freshmen learn what they will confront in the coming college life by passing out necessary materials and explaining their questions about campus activities .So volunteers needed in this program should be those who are sophomores or juniors and are ready to help others . Th...
根据第一段:They might also be able to permanently remove species of plants and animals that are destructive to other species可得答案。故选B。【小题2】A推理判断题。根据最后一段:It is possible that those genes could harm those creatures or even lead to their disappearance from our planet这是...
preserve rare species, connect to history, invest in the future, grow food and create beauty.“When you ask people to tell you about the one activity they do not for money, not out of necessity, but to indulge their deepest passions and their wildest curiosities,” Stewart writes, “well...
Lizards that can outrun blazes. Birds that lay ash-colored eggs. Wildlife may have a limited ability to evolve in this fiery new era known as the Pyrocene.
we have bunches of brochures here. i would recommend getting out on a boat trip. the kids will love it, and there are so many islands nearby to explore. there s also a great night market further into town that h...
【解析】1.B.细节理解题.根据第一段中"Th ey might also be able to permanently remove s pecies of plants and animals that are destruct ive to other species"可知,基因控制的优势是可 以永久去除对其他物种有威胁的植物和动物.故选 B. 2.A.推理判断题.根据最后一段中"Itisposs ible that those gen...
rex have been discovered as fossils, so the fossil record accounts for just 1 in about every 80 million T. rex. This means that the chances of being fossilized were small.These numbers suggest that fossils in general are rare, and that many species that were less widespread than T. rex ...
Third, there is the possibility that the agnostids were parasites, living on and feeding off larger organisms. One reason that this seems possible is that there are many species of modern-day arthropods that exist as parasites, such as fleas,ticks, and mites. The agnostids might have lived on...