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Lesson 1
BIODIVERSITY
• extinction
• biodiversity
• genetic diversity
• species diversity
• ecosystem diversity
• Biodiversity is important to the health of the biosphere.
• There are three types of biodiversity: genetic, species, and
ecosystem.
• Biodiversity has aesthetic and scientific values, and direct and
indirect economic value.
• It is important to maintain biodiversity to preserve the reservoir
of genes that might be needed in the future.
• Healthy ecosystems can provide some services at a lesser expense
than the use of technology.
Lesson 2
THREATS TO BIODIVERSITY
• background extinction
• mass extinction
• natural resource
• overexploitation
• habitat fragmentation
• edge effect
• biological magnification
• eutrophication
• invasive species
• Some scientists estimate that the current rate of species extinction
is abnormally high.
• Species on islands are particularly vulnerable to extinction.
• Historically, overexploitation of some species by humans has led
to their extinction.
• Human activities can result in a decrease in biodiversity.
Lesson 3
CONSERVING BIODIVERSITY
• renewable resource
• nonrenewable resource
• sustainable use
• endemic
• bioremediation
• One approach to using natural resources is sustainable use.
• There are many approaches used to conserve biodiversity in the
world.
• Biodiversity hotspots contain a large number of endemic species
that are threatened with extinction.
• Since the 1970s, many forms of legislation have been passed to
protect the environment.
• Two techniques used to restore an ecosystem are bioremediation
and biological control of invasive species.
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MODULE 5
STUDY GUIDE
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Module 5 • Study Guide