一些山脉是由于这些板块相互碰撞，迫使板块边缘的岩石向上移动而形成的。
Some mountains were formed as a result of these plates crashing into each other and forcing up the rock at the plate margins.
另一些山脉可能是由地震引起的，地震使地壳断裂，并移动足够的岩石，从而形成块状山脉。
Other mountains may be raised by earthquakes, which fracture the Earth's crust and can displace enough rock to produce block mountains.
研究者说这有可能是由于哺乳动物向北部山脉移动、兽类短缺或是人类越来越偏爱其他的猎物种类造成的。
The researchers say this could be due to a northward range shift in the mammal, a scarcity of the beast, or an increasing human preference for other prey species.
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