View Full Document. Ultimate base level for all rivers is sea level - Longitudinal profile: way to show a riverâs overall vertical drop. Shows the elevation of its channel bottom from the headwater areas to its downstream termination (the riverâs mouth).
The population is as diverse as it is large, with some 250 ethnic groups. Nigeria's three largest ethnic groups are: Hausa-Fulani (29 percent of the population), Yoruba (21 percent) and Igbo, or Ibo (18 percent).he population is as diverse as it is large, with some 250 ethnic groups. Nigeria's three largest ethnic groups are: Hausa-Fulani (29 percent of the population), Yoruba (21 percent) and Igbo, or Ibo (18 percent).
I am a Jewish Igbo, he says. The Igbo are one of Nigeria's largest ethnic groups with population estimates ranging from 20 to 50 million. Abor is convinced that the Igbo's ancestors were Jews. The son of Yaakov, Jacob, [was] Gad and I learned that he was among those people who went out of Israel to exile, Abor says. am a Jewish Igbo, he says. The Igbo are one of Nigeria's largest ethnic groups with population estimates ranging from 20 to 50 million. Abor is convinced that the Igbo's ancestors were Jews. The son of Yaakov, Jacob, [was] Gad and I learned that he was among those people who went out of Israel to exile, Abor says.