The raised fields of the Tiwanalcu may be a good example of a complex society already responding to the challenges of a marginal environment, and therefore vulnerable to sudden climate change.

提瓦那库的高地农业可以做为一个绝好的例子来说明一个复杂的社会对于边缘 环境的 挑战已作出反应，但也因此易于受到气候突变的伤害。

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Initially, the company raised money to buy old declining oil fields that others no longer wanted with a focus on oil properties.

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Enter Borg, who was raised by women working in male-dominated fields.

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Concerns have been raised that ousting life peers, with their expertise in the fields of law, medicine, industry, the voluntary sector, show business and the armed forces, would deprive the Lords of its vital independence.

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