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abiotic

abiotic   Quick reference

A Dictionary of Geography (5 ed.)

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Subject Reference
Current Version:
2015

Not living, non-biological, usually describing factors in an ecosystem: atmospheric gases, humidity, salinity, soil mineral particles, water, and so on.

ablation

ablation   Quick reference

A Dictionary of Geography (5 ed.)

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Subject Reference
Current Version:
2015

Loss of snow and ice from a glacier by *sublimation, melting, and evaporation; and from the *calving

aborigine

aborigine   Quick reference

A Dictionary of Geography (5 ed.)

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Subject Reference
Current Version:
2015

A member of an indigenous people existing in a land before invasion or colonization from outside. For Canadian aboriginal peoples,

abrasion

abrasion   Quick reference

A Dictionary of Geography (5 ed.)

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Subject Reference
Current Version:
2015

Also known as corrasion, this is the grinding away of bedrock by fragments of rock which may be incorporated in

absolute humidity

absolute humidity   Quick reference

A Dictionary of Geography (5 ed.)

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Subject Reference
Current Version:
2015

The density of the water vapour present in a mixture of air and water vapour. Cold air cannot contain as

absolute plate motion

absolute plate motion   Quick reference

A Dictionary of Geography (5 ed.)

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Subject Reference
Current Version:
2015

The movement of a crustal plate in relation to a fixed point, such as a hot spot, or latitude and

abstraction

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A Dictionary of Geography (5 ed.)

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Subject Reference
Current Version:
2015

The selection and conceptualization of a phenomenon, or some aspect of it; a way of viewing a real world object,

abundance

abundance   Quick reference

A Dictionary of Geography (5 ed.)

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Subject Reference
Current Version:
2015

The total number of individuals of a certain species present in an area, generally estimated by sampling methods (such as

abyssal

abyssal   Quick reference

A Dictionary of Geography (5 ed.)

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Subject Reference
Current Version:
2015

Of or belonging to the ocean depths, especially below 2000 m. The abyssopelagic zone is that part of deep lakes,

accelerator

accelerator   Quick reference

A Dictionary of Geography (5 ed.)

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Subject Reference
Current Version:
2015

A factor which increases the momentum of a boom or slump in an economy, so that a small change in

access

access   Quick reference

A Dictionary of Geography (5 ed.)

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Subject Reference
Current Version:
2015

Connection or entry to a service. A. Sen (1999) measures access to advantage by one’s access to basic

accessibility

accessibility   Quick reference

A Dictionary of Geography (5 ed.)

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Subject Reference
Current Version:
2015

The ease of approach to one location from other locations: in terms of the distance travelled, the cost of travel,

accordant

accordant   Quick reference

A Dictionary of Geography (5 ed.)

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Subject Reference
Current Version:
2015

Complying with; thus, accordant drainage has evolved in conformity with the underlying geological structure: domes show a radial pattern, for

accretion

accretion   Quick reference

A Dictionary of Geography (5 ed.)

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Current Version:
2015

1 The growth of land by the offshore deposition of sediment, forming *spits and *tombolos. Accretion is

acculturation

acculturation   Quick reference

A Dictionary of Geography (5 ed.)

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Subject Reference
Current Version:
2015

The adaptation to, and adoption of, a new culture. This may occur simultaneously as two cultures meet, but occurs more

accumulated temperature

accumulated temperature   Quick reference

A Dictionary of Geography (5 ed.)

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2015

One of the key factors for crop growth, this is the length of time, from a specific date, for which

accumulation

accumulation   Quick reference

A Dictionary of Geography (5 ed.)

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Subject Reference
Current Version:
2015

1 The input of ice to a glacier. Weaver (1975) Arct. & Alpine Res. 7, 3 suggests that it is

acidification

acidification   Quick reference

A Dictionary of Geography (5 ed.)

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Subject Reference
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2015

A soil-forming process whereby organic acids (from humus) increase hydrogen ion concentration, as in the transformation of *brown-earth soils

acid rain

acid rain   Quick reference

A Dictionary of Geography (5 ed.)

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Subject Reference
Current Version:
2015

When *fossil fuels are burned, dioxides of sulphur and nitrogen are released into the air; these dissolve in atmospheric

acid soil

acid soil   Quick reference

A Dictionary of Geography (5 ed.)

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Subject Reference
Current Version:
2015

Soil with a pH under 7, such as *podzols and *brown earths. Acidity in a soil may

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