19. human influences on ecosystems Flashcards

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1
Q

monoculture

A

area of ground covered by a single crop with almost no other species present

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2
Q

biodiversity

A

the number of different species that live in ana area

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3
Q

extinction

A

the complete loss of a species from Earth

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4
Q

greenhouse gases

A

gases such as carbon dioxide and methane that trap heat within the atmosphere

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5
Q

greenhouse effect

A

the heating effect on the earth of the trapping of heat by greenhouse gases

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6
Q

enhanced greenhouse effect

A

the increased heating effect caused by an increase of greenhouse gases in the atmosphere

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7
Q

eutrophication

A

a chain of events caused by the addition of extra plant nutrients to water resulting in a decrease in the concentration of dissolved oxygen available for organism that require it for aerobic respiration

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8
Q

sustainable resource

A

one that is produced as rapidly as it is removed from the environment so that it doesnt run out

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9
Q

captive breeding

A

keeping animals in captivity and allowing them to breed in order to increase the numbers in the populations

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10
Q

captive breeding

A

keeping animals in captivity and allowing them to breed in order to increase the numbers in the populations

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11
Q

seed banks

A

facilities in which seeds of different plant species or crop varieties are stored for long periods of times in order to conserve as many different species and varieties as possible

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12
Q

artificial insemination

A

introducing semen containing sperm to the reproductive organs of a female

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13
Q

in vitro fertilization

A

adding semen containing sperm to eggs in a container in a laboratory where the fertilization occurs so embryos can be later inserted into the body of a female

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