Trematoda
The two largest ethnic groups in the United States are white and black African American.
Sunni.
Zooplankton.
The two largest ethnic groups in the United States are white and black African American.
There are numerous tribal groups represented. The Apache and the Navajo are the two largest groups in Arizona.
Pennsylvania
in north caralina
bacteriainsects
Serbs and Croats are the 2 largest ethnic groups in Yugoslavia
The largest ethnic groups in Virginia are: African, Scotch-Irish, German, and English.
cathlic and protestant