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Threats to Conserving Human
Biodiversity
BiodiversityBiodiversity Impacts
Actual Test
Questions
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When the last member of the
species dies
Extinction
Thee number of different species
in a biological community
Species diversity
Maintaining ______ has a direct
economic value to humans
Biodiversity.
Why is it important to maintain
biodiversity for medical reasons?
Humans rely on plants for
medicine
The process of transferring genes
is known as
Genetic Engineering
An event in which a large amount
of all living species become
extinct in a relatively short time
Mass extinction
All the materials and organisms
found in the biosphere
Natural resources
The excessive use of species that
have economic value is known as
Overexploitation
The gradual process of species
becoming extinct is known as
Background extinction
Occurs when fertilizers, animal
waste, sewage, or other
substances rich in phosphorus
flow in waterways causing
extensive algae growth
Eutrophication
Resources that are replaced faster
than they are consumed are
known as
Renewable resources
Using resources at a rate at which
they can be replaced or recycled
is known as
Sustainable use
Species that are found only in
specific geographic area
Endemic species
The use of living organisms such
as prokaryotes, fungi, or plants to
detoxify a polluted are is known
as
Bioremediation
Adding natural predators to a
degraded ecosystem is known as
Biological augmentation
Throughout history, humans have
lived primarily as what types of
groups?
Hunters/gatherers
What layer of the atmosphere
contains the ozone layer
Stratosphere
What specific atom is the main
cause of the greenhouse effect
CO2
The two different sources of
water pollution are known as
Point and Non-point
The accumulation of chemicals in
organisms at higher trophic levels
of a food chain is known as what
Biomagnification
True or false: the best way to
restore a damaged ecosystem is
to introduce predators to control
the population of endemic
species
False
The cheetah population was
around 100,000 in 1900. Today,
fewer than 12,000 cheetahs
remain. What type of natural
recources are cheetahs
considered?
Nonrenewable
The variety of ecosystems that
are present in the biosphere is
called
Ecosystem Diversity
The different environmental
conditions that occur along the
boundaries of an ecosystem are
described by ecologists as
________
Edge Effects
Why is sandstone classified as a
nonrenewable resource
Sandstone takes thousands of
years to form