从一个湖中收集的泥土和花粉样本显示，作为肥料使用的骆驼粪便帮助古代印加人从狩猎聚会过渡到耕种。
Samples of mud and pollen taken from a lake suggest llama dung, used as fertilizer, helped the ancient people of the Andes make the transition from hunter-gathering to farming.
这种默认模式可能通过我们狩猎和聚会时警告危险的出现来带给我们一种进化的优势。
This default mode probably gave us an evolutionary advantage by making us alert to dangers while we were hunting and gathering.
这种默认模式可能通过我们狩猎和聚会时警告危险的出现来带给我们一种进化的优势。
This default mode probably gave us an evolutionary advantage by making us alert to dangers while we were hunting and gathering.
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