Glencoe Earth Science

Chapter 14: 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.

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078617006/161752/m513_001a_866621.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (6.0K)</a>

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.

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078617006/161752/m513_001a_866621.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (6.0K)</a>

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.

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078617006/161752/m513_001a_866621.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (6.0K)</a>

A)33.3%
B)22.2%
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.

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078617006/161752/m513_001a_866621.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (6.0K)</a>

A)insects
B)reptiles
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.

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078617006/161752/m513_001a_866621.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (6.0K)</a>

A)44.4%
B)33.3%
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.

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078617006/161752/m513_002a_866621.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (8.0K)</a>

A)88.6%
B)90%
C)91.9%
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.

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078617006/161752/m513_002a_866621.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (8.0K)</a>

A)99%
B)91.9%
C)88.6%
D)90.2%
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.

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078617006/161752/m513_002a_866621.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (8.0K)</a>

A)95%
B)91.7%
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.

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078617006/161752/m513_002a_866621.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (8.0K)</a>

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.

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078617006/161752/m513_002a_866621.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (8.0K)</a>

A)95%
B)96%
C)90.5%
D)89.9%
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe

Please read our Terms of Use and Privacy Policy before you explore our Web site. To report a technical problem with this Web site, please contact the Web Producer.