OCR GCSE Geography B key terms

Pressure on water resources when demand approaches or exceeds the available supply.

A system that moves water from one area to another using pipes, canals or rivers.

The breakdown of rock in its existing location, without its removal.

A change in wind speed or direction with height. Low wind shear helps a tropical storm remain organised.

A city with important international connections and influence, for example through finance, business, transport and culture.

The amount of agricultural produce obtained from a given area of land, often measured per hectare.

Photosynthetic algae that live within the tissues of many reef-building corals, supplying them with products of photosynthesis.