A Global Context
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A rapid increase in the number of people between the ages of 15 and 24.

A measure of the number of individuals below 14 and over 65 when compared to the total working aged population.

A logarithmic scale that measure seismic disturbances from 1 to 10.

The ability to meet the needs of the present without destroying the needs of the future.

A storm arising over warm sea water that produces heavy rainfall and punishing winds The terms 'hurricane' and 'cyclone' are also used.

An indicator used to describe and measure the number of distinct plant and animal species in a given geographical area.

The 750-mile active zone between he Pacific and North American plates that runs from San Francisco down to southern California.

A large sea wave resulting from a tectonic shift.

The economic and political alliance of most European countries.

Attempts to reduce climate change

A layer of soil that remains frozen all the year round.

The transmission of cultural ideas and practices around the world.

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