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__________ is the study of population.
__________ ratio is the number of dependents in a population divided by the number of working age people.
_______________ is the degradation of relatively dry land into even more arid land through human activity or climate change.
___________ waves are when the backwash is stronger than the swash and so the beach is eroded.
___________ is the improvement of quality of life in a country through technological advances and application of resources.
River _________ measures the volume of water passing a point at a given time; it is measured in cubic metres per second.
__________ income is the amount of money people have left over after paying their living expenses.
________ is the removal of sediment from a river or sea bed.
________ are homes that are designed to conserve energy and resources.
An ________ core region is the most highly developed region in a country with high population and high average income.
_________ of scale are the result of business growth; a larger operation means lower production costs.
__________ is the responsible travel to natural areas in order to have minimal impact on the local ecosystem.
A new town designed to have as little environmental impact as possible is called an _______.
An ________ is someone who leaves their country to live in another one for longer than a year.
The ______ gap is the difference between a rising demand for ______ and the country's ability to produce that ______.
Hard ___________ refers to the use of concrete and artificial structures in coastal defenses.
_____________ impact is the effect of a natural event on the landscape and ecology.
