Glencoe Science Level Blue

Chapter 10: 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)70.4%
B)22.2%
C)33.3%
D)52.8%
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)both insects and reptiles
B)insects
C)amphibians
D)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)33.3%
B)44.4%
C)25%
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)91.9%
B)90%
C)88.6%
D)98.9%
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)88.6%
B)91.9%
C)90.2%
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)91.1%
B)95%
C)88.5%
D)91.7%
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)99.2%
B)96%
C)95.1%
D)75.6%
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)90.5%
B)96%
C)95%
D)89.9%
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