Thelotornis is a genus of snakes known as twig snakes. The most recently discovered snake species, Thelotornis usambaricus, was found in January 2013. Coincidentally the species was discovered just before the start of the Chinese Year of the Snake. Unlike most snakes, twig snakes have binocul...
Comparisons of the DNA of Amborella and many hundreds of species of flowering plants suggest that the first angiosperm arose and the development of separate species occurred about 135 million years ago.Recently discovered fossils complicate our understanding of the origin of the angiosperms even further...
Here are our editors’ picks for the most compelling wildlife findings of the year, from ants that can regrow their brains to the world’s tiniest reptile.
Here's a list of the most threatened animal species in the world. It approximates how many of each exist in the wild and also indicates which efforts, if any, are being used to save them.
题目Recently Australia has listed the koala as an endangered species across most of(1) its(it) east coast,after a dramatic decline in numbers because(2) ofland clearing,bushfires,drought,disease and other threats.The federal government has been urged to do more(3) to protect(prote...
New clues from the day the dinosaurs died. A mysterious ancient human tooth. Primordial galaxies. See how the past year expanded our knowledge of the cosmos and our own backyard.
(1 )根据前句 The Panda Ant is a most unusual species with a lovely appearanee. 可知这里来 解释熊猫蚂蚁名字的由来。故选 B。 ( 2)根据前句 When fully grown, the male, possibly attaining a length of approximately 0. 8 centimeters, is several times larger than the female. 可知,这里继续讲...
Butterworts or "pings" exist in most reaches of the Northern Hemisphere, with the most spectacular species being found in Mexico. There are about 70 species, many only discovered relatively recently. They typically have a circular, rosette form measuring a few inches (centimeters) in diameter, ...
A fossil recently discovered in Marlandia, a chain of islands, proves that a present-day reptile indigenous to Marlandia is descended from an ancient reptile species that lived on the islands millions of years ago. The finding is surprising since the ancestral species was thought to have become ...
Although the domestic dog’s origin is still unclear, this lineage is believed to have been domesticated from an extinct population of gray wolves, which is expected to be more closely related to dogs than to other populations of gray wolves. Here, we se