A Global Context
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When water is too warm coral will eject the algae in their tissues making them turn white. It is a sign of stress and an indicator of poor health and even the death of the coral.

A model of different stages that begins with high birth and death rates, moves through increasing birth rated and declining death rates to low birth rates and long life expectancy.

Generally refers to any sustained period of cooler weather, but more specifically often used to the period from 2.5 million to 10,000 years ago when permanent ice sheets were created and the weather cooled dramatically.

Name given to informal settlements in Lima, Peru.

The global exchange of plants and animals unique to either the Old World or the New World.

The zone between protected wild land and land being developed.

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

The process by which improvements in transport make it quicker to cover the same distance and thus bring places closer together.

The transmission of cultural ideas and practices around the world.

A seasonal wind in South East Asia that blows from land to sea in October to May (dry monsoon ) and from sea to land on May to September bringing rain (wet monsoon).

A scientific organization established by the United Nations to provide objective information on climate change and its possible impacts

A change in climate that takes different forms across the globe.

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