Biology-Ch. 6 Humans In The Biosphere

Front 1

the practice of farming

Back 1

agriculture

Front 2

large fields are planted with a single variety year after year

Back 2

monoculture

Front 3

a greatly increase in the world's food supply due to highly productive plant strains and modern agricultural techniques

Back 3

green revolution

Front 4

resources that can reproduced

Back 4

renewable resources

Front 5

resources that cannot be replenished by natural processes

Back 5

nonrenewable resources

Front 6

a way of using natural resources without depleting them and of providing for human needs without causing longterm environmental harm

Back 6

sustainable development

Front 7

the wearing away of surface soil by water and wind

Back 7

soil erosion

Front 8

process where certain parts of the world with dry climates, a combination of farming, overgrazing, and drought has turned once productive areas into deserts

Back 8

desertification

Front 9

loss of forests which can lead to severe erosion as soil is exposed to heavy rains

Back 9

deforestation

Front 10

the raising of aquatic animals for human consumption; helping to sustain fish resources

Back 10

aquaculture

Front 11

a mixture of chemicals that occurs as a gray-brown haze in the atmosphere

Back 11

smog

Front 12

a harmful material that can enter the biosphere through the land, air, or water

Back 12

pollutant

Front 13

when nitrogen and sulfur compounds are released into the atmosphere, these coumpounds combine with water vapor in the air, they form drops of nitric and slfuric acids and then fall as this

Back 13

acid rain

Front 14

the sum total of the GENETICALLY based variety of all organisms in the biosphere

Back 14

biodiversity

Front 15

the variety of habitats, communities, and ecological processes in the living world

Back 15

ecosystem diversity

Front 16

the number of different species in the biosphere

Back 16

species diversity

Front 17

the sum total of all the different forms of genetic information carried by all organisms living on Earth today

Back 17

genetic diversity

Front 18

occurs when a species disappears from all or part of its range

Back 18

extinction

Front 19

a species whose population size is declining in a way that places it in danger of extinction

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endangered species

Front 20

a process that splits ecosystems into pieces

Back 20

habitat fragmentation

Front 21

process where concentrations of a harmful substance increase in organisms at higher trophic levels in a food chain or food web

Back 21

biological magnification

Front 22

organisms introduced into new habitats that often reproduce rapidly, due to the lackingof parasites and predators that control their populations, "back home"

Back 22

invasive species

Front 23

the wise management of natural resources, including the preservation of habitats and wildlife

Back 23

conservation

Front 24

the atmosphere contains a relatively high concentration of oxone gas called the

Back 24

ozone layer

Front 25

the term used to decribe the increase in the average temperature of the biosphere

Back 25

global warming