asymmetry of the oscillation causes the bed forms to shift laterally at non-negligible rates. I will unofficially term cross stratification of this kind climbing-bed-forms cross stratification. Bed forms are said to climb when there is overall aggradation of the sediment bed while the bed forms are moving; see a later section for details.) 502
Swahili is the most spoken language in Africa, with over 100 million speakers. It is a Bantu language believed to have originated from other languages, mainly Arabic, due to historical interactions between Arabs from the Middle East and East Africans.
Igbo (Asá»¥sá»¥ Igbo), or Ibo, one of the largest languages of West Africa, is spoken by 18 million people in Nigeria. It belongs to the Benue-Cong o group of the Niger-Congo language family.gbo (Asá»¥sá»¥ Igbo), or Ibo, one of the largest languages of West Africa, is spoken by 18 million people in Nigeria. It belongs to the Benue-Cong o group of the Niger-Congo language family.