Instead, dogs and wolves shared a wolflike ancestor.Folklore supposes that humans brought wolf puppies into camp and domesticated them. Or as wolf expert David Meeh wrote in 1974, “Evidently early humans tamed wolves and domesticated them, eventually selectively breeding them and finally developing...
根据第一段"Selective breeding, also known as artificial selection, is a process used by humans to develop new organisms with desirable traits. It can be used to produce tastier fruits and vegetables, crops with greater resistance to pests, and larger animals that can be used for meat.(选择性...
Interestingly, cows, as we know them, didn’t exist at that time; there were instead Aurochs. Archaeological and genomic evidence reveals that humans domesticated the taurine cow, a closely related species of wild aurochs, about 7,000 years ago in what is called the Fertile Cresent (in the ...
Human disturbance drives the decline of many species, both directly and indirectly. Nonetheless, some species do particularly well around humans. One mechanism that may explain coexistence is the degree to which a species tolerates human disturbance. Her
Harem stallions fight for the females and protect their harems against predators and the bachelor males, which are non-breeding males without a harem. Credit: Katalin Ozogány The findings reveal that wild horses, just like humans, live in a complex, multilevel society. The organization...
Even a glass of drinking water left on the deck can become a breeding ground for mosquito eggs — and mother mosquitoes lay about 100 eggs at a time. “They don’t need very much at all to breed. It can be a backyard toy , like a truck that has a bit of water in it, or a ...
D.Tits like to follow fellow birds’ behavior in most cases. 2. Why did Dr Wild and Dr Aplin rerun William’s experiment? A.To offer guidance for William. B.To study birds’ nests. C.To prove birds’ modelling behavior. D.To investigate bird breeding. ...
Eventually humans began toselectively breed these animals for specific traits. Physical characteristicschanged and individual breeds began to take shape. As humans wandered acrossAsia and Europe, they took their dogs along, using them for additional tasksand further breeding them for selected qualities ...
But researchers insist that science could give nature a fighting chance against both natural and man-made dangers.They hope to answer the critics by stopping the new trees from breeding, so their effect on the environment can be controlled.【小题1】Which kind of tree is not the ones that sc...
Species-based conservation of the Scottish wildcat has included removing them from the wild and placing them into zoos and wildlife sanctuaries for captive breeding, as well as the targeted destruction of feral domestic and hybrid cats in the wild. But that reduces the number of wild animals even...