Earth Science: The Changing Surface of Earth, Book G

Chapter 6: Geologic Time

Calculate Percentages

1.
At the end of the Permian Period, many species became extinct. Use the data in the table to calculate the percentage of insect orders that survived this extinction.

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A)52.8%
B)22.2%
C)33.3%
D)70.4%
2.
At the end of the Permian Period, many species became extinct. Use the data in the table to calculate the percentage of reptile orders that survived this extinction.

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A)75.2%
B)33.3%
C)22.2%
D)70.4%
3.
At the end of the Permian Period, many species became extinct. Use the data in the table to calculate the percentage of amphibian orders that survived this extinction.

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A)22.2%
B)33.3%
C)25%
D)75.2%
4.
At the end of the Permian Period, many species became extinct. Use the data in the table to calculate which order of animals was most affected by this extinction.

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A)reptiles
B)insects
C)amphibians
D)both insects and reptiles
5.
At the end of the Permian Period, many species became extinct. Use the data in the table to calculate the percentage of all groups that survived this extinction.

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A)25%
B)33.3%
C)44.4%
D)56.6%
6.
In the past 400 years, many classes of animals have become extinct in rainforests. Calculate the percentage of mammal classes that survived this extinction.

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A)98.9%
B)90%
C)88.6%
D)91.9%
7.
In the past 400 years, many classes of animals have become extinct in rainforests. Calculate the percentage of bird classes that survived this extinction.

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A)91.9%
B)90.2%
C)88.6%
D)99%
8.
In the past 400 years, many classes of animals have become extinct in rainforests. Calculate the percentage of reptile classes that survived this extinction.

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A)91.7%
B)95%
C)88.5%
D)91.1%
9.
In the past 400 years, many classes of animals have become extinct in rainforests. Calculate the percentage of amphibian classes that survived this extinction.

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A)75.6%
B)99.2%
C)95.1%
D)96%
10.
In the past 400 years, many classes of animals have become extinct in rainforests. Calculate the percentage of all groups that survived this extinction.

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A)95%
B)96%
C)90.5%
D)89.9%
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