Select a vital nonrenewable or exhaustible resource (water, mineral, energy, food, etc.) For which your team can find appropriate world-wide historic data on its endowment, discovery, annual consumption, and price.

• 选择一个至关重要的,但不能再生或者用得尽的资源(水,矿物质,能源,食品,等等),你的队需要找到一些关于它的蕴藏量,已发现储量,每年消费额和价格的数据,这些数据应该是适合世界范围的、有历史意义的。