Glencoe Biology

Section 2: Threats to Biodiversity

Self-Check Quizzes

1.
An event in which a large percentage of all species become extinct is called ____.
A)biodiversity shift
B)background extinction
C)mass extinction
D)evolutionary shift
2.
Materials such as minerals, soil, fuels, and clean water are called ____.
A)bioelements
B)natural resources
C)heterotrophic resources
D)habitats
3.
According to this table, which statement is true?
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A)More bird species have been lost than mammal species.
B)More mammal species have been lost than invertebrate species.
C)Birds have lost a higher percentage of species than mammals.
D)Fish have lost a higher percentage of species than reptiles.
4.
What causes the edge effect in habitats?
A)eutrophication
B)destruction of habitat
C)biological magnification
D)fragmentation of habitat
5.
Which organisms are affected most by biological magnification?
A)algae
B)plants
C)wolves
D)mice
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