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Habitat alteration

what is the greatest cause if biodiversity loss

edge effect

what is it called when conditions along a fragments edge are different than conditions in the interior

habitat fragmentation and preserve design government subsides to farmers

the SLOSS dilemma involves controversy over

90% of our food comes from ____ crops and ___livestock species


increase the incidence of disease transmission

high population density can

k selected

groups of organisms with low biotic potential, such a gray wales, that produce at most one offspring every other year are

subsistence agriculture

Agricultural practices, where the members of a farming family produce only enough food for themselves and do not make use of large scale irrigation, chemical fertilizer or machinery and technology is called

weathering of parent material

factors involved in soil formation are

primarily compared of organic materials

the O horizon is

E horizon

the horizon where leaching has deposited materials is called

natural resources conservation service

the US agency charged with slowing soil degradation is the

fresh vegetation (dead plants but not composted)

Green Manure

is an agriculture practice of growing large stands of a single species


beef cattle

raising ______ requires the most land and water

protecting genetic diversity

seed banks are important for

grown at a faster rate than

during the past half century, global food production has ___ world population growth.

plant-based foods

it is more energetically efficient for us to eat more

potential disruption of non target species in ecosystem

which of the following is a potential disadvantage of the biological control of pests?


which of the following agriculture systems would be most susceptible to diseases or pests

integrated biocontrol management

the practice of integrating biocontrol, crop rotation, alternative tillage methods and chemical use is called


the extinction of a particular population from a given area is called

increased genetic diversity within the species

a species of lizard has gone extinct. this could be due to any of the following reasons except

a keystone species

removal of which of the following species will always result in the greatest changes in a ecological system

landowners are concerned that federal officials will restrict the use of their private land if endangered species are found on it

the endangered species act in often a center of controversy because

a species if protected will result in the protection of many others that require the same habitat

an umbrella species is defined as


sally loves to be outdoors and hikes everyday with her 3 pets. Edward O Wilson would say she is evidence of biophilia

ecosystem services

phameceuticals produced from wild species produce up to $150 billion in sales and saves many lives. this is an example of

captive breeding programs

all of the following are ways that humans reduce biodiversity in ecosystem except

a peace park

a transboundary parks that eases tensions by acting as buffers between quarreling nations is called

are off-limits to development of any kind but are open to low impact recreation

wilderness areas


the first national park

living organisms to detoxify ecosystems

bioremediation is the use of

the require biodiversity be used in a sustainable manner

the convention on biological diversity

increased biodiversity by providing income to areas that might otherwise be destroyed



which is NOT an example of a density-dependent population limiting factor


the departure of individuals from a population is called

many interacting species that live in the same area


organisms and the abiotic material with which their members interact


specific environment in which an organism lives


number of individuals within a population per unit area

population density

species occurring in only one area


lands used for grazing livestock


alternating bands of different types of vegetation planted across a slope


the fundamental geological material for soils in a particular area

parent material

the name for an individual layer of soil


the layer below the O horizon in an idealized profile

A horizon

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