19. human influences on ecosystems Flashcards
monoculture
area of ground covered by a single crop with almost no other species present
biodiversity
the number of different species that live in ana area
extinction
the complete loss of a species from Earth
greenhouse gases
gases such as carbon dioxide and methane that trap heat within the atmosphere
greenhouse effect
the heating effect on the earth of the trapping of heat by greenhouse gases
enhanced greenhouse effect
the increased heating effect caused by an increase of greenhouse gases in the atmosphere
eutrophication
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
sustainable resource
one that is produced as rapidly as it is removed from the environment so that it doesnt run out
captive breeding
keeping animals in captivity and allowing them to breed in order to increase the numbers in the populations
captive breeding
keeping animals in captivity and allowing them to breed in order to increase the numbers in the populations
seed banks
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
artificial insemination
introducing semen containing sperm to the reproductive organs of a female
in vitro fertilization
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