When did primates first appear? When did the predatory marsupials become extinct in South America? When did great apes first learn to communicate? What was the first animal to be domesticated? Where are camels native to? Are sheep native to Australia?
When were the first soft-bodied fossils found? When was the first climate map made? What geologic cycle is an earthquake in? When did oceans first appear on the geological time scale? When did the Krakatoa volcano erupt? Do aftershocks show up on seismograph?
When did the first hominins appear? Sahelanthropus was the earliest, dating7-6 million years ago. Orrorin lived about 6 million years ago, while Ardipithecus remains have been dated to 5.8-4.4 million years ago. At present, the vote is still out as to whether any of these three primates ...
When did the first dinosaurs appear? First Dinosaurs.Approximately 230 million years ago, during the Triassic Period, the dinosaurs appeared, evolved from the reptiles. Plateosaurus was one of the first large plant-eating dinosaurs, a relative of the much larger sauropods. It grew to about 9 me...
Aromatization of testosterone to estradiol occurs in primates, including humans, but does not necessarily have a major role in masculinization of the primate brain. Instead, both testicular production of testosterone and intact androgen receptors are necessary to defeminize the human brain as evidenced...
Although there is an entire field devoted to the importance of the female estrous (rodents) or menstrual (primates) cycle on outcomes from dendritic spine dynamics to cognitive processing, most neurobiological measures where an actual sex difference is found are not driven by changes in female ...
a他不知道怎样游泳 He did not know how swims[translate] a似乎他已经看过这部电影 As if he already has watched this movie[translate] aBondage and doggy play isn't as straightforward as it may at first appear - dogs prefer a "moving target" - so Lex needs a little help getting started. ...
A first key challenge to epitope-specific or site-specific vaccine design is that naive B cells with the correct epitope specificity may be both rare and have low affinity for the pathogen. This can result in immunodominant non-protective B cell specificities outcompeting the desired B cells ...
When did humans first appear on Earth? The first human ancestors appearedbetween five million and seven million years ago, probably when some apelike creatures in Africa began to walk habitually on two legs. They were flaking crude stone tools by 2.5 million years ago. Then some of them sprea...
Catching movements must be aimed ahead of the moving ball, which may require predictions of when and where to catch. Here, using repetitive Transcranial Magnetic Stimulation we show for the first time that the Superior Parietal Occipital Cortex (SPOC) displays non-predictive online spatial coding at...