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Knows that the amount of life any environment can support is limited by the available energy, water, oxygen and materials, and by the ability of ecosystems to recycle the residue of dead organic materials.

Learning to Think Globally

There is a popular bumper sticker slogan which advises us to 'Think Globally, Act Locally'. But what does it really mean to 'think globally'? One meaning could be to try to estimate the global consequences of the things you do. Here is one way to go about this.

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