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Geography - People and the Biosphere > Key Words > Flashcards

Key Words Flashcards

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1
Q

biome

A

large scale ecosystem

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2
Q

biosphere

A

the layer of the Earth inhabited by living organisms

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3
Q

ecosystem

A

self-sustaining system of interactions between living and non-living things

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4
Q

biotic

A

living things

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5
Q

abiotic

A

non-living things

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6
Q

flora

A

vegetation eg. plants

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7
Q

fauna

A

animals eg. tiger

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8
Q

carbon sequestration

A

the process of removing carbon dioxide from the atmosphere and locking it up in biotic material

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9
Q

surface run-off

A

water from precipitation flows over the lands surface

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10
Q

altitude

A

height

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11
Q

biomass

A

the mass or volume of living things in an area or biome

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12
Q

climate graph

A

a graph which shows precipitation (bar) and temperature (line)

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13
Q

evapotranspiration

A

when water evaporates from pores of leaves into the atmosphere. This results in water being drawn up the plant stems. This is combined process of evaporation and transpiration.

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14
Q

goods

A

physical materials eg. wood

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15
Q

services

A

functions eg. oxgen from trees

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16
Q

provisioning services

A

products obtained from ecosystems eg. vegetables, nuts, game

17
Q

regulating services

A

keeps areas and the whole planet healthy eg. storing carbon and emitting oxygen which keeps the atmosphere balanced

18
Q

supporting services

A

keeps the ecosystem healthy eg. nutrient cycle

19
Q

cultural services

A

benefits people get from a healthy ecosystem eg. spiritual well-being and happiness

20
Q

resources

A

found in the natural world that we need to survive or make a living

21
Q

commercial exploitation

A

using the biosphere to make a profit

22
Q

non-renewable resources

A

cannot be remade eg. fossil fuels

23
Q

sustainable resources

A

can be deliberately renewed by managing them eg. trees

24
Q

renewable resources

A

renew themselves without being managed eg. wind energy

25
Q

malthus theory

A

the growth of population is faster (increasing geometrically) than food supply (increasing arithmetically) and the population will decrease through starvation and ‘Positive Checks’ such as diseases and ‘Preventative Checks’ such as couples having less children

26
Q

boserups theory

A

the population determines agricultural methods and the human race will always invent new ways of coping with demand and we will never run out of food

Geography - People and the Biosphere (1 decks)

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