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.
Swahili (also called Kiswahili) is the national language of Kenya. It is a unifying African language spoken by nearly 100 percent of the Kenyan population. Even illiterate Kenyans know some basic Swahili. The purest form of Kiswahili is spoken along the coast where native Swahili people live. Swahili is one of the most common African languages and it is spoken in many countries other than Kenya, such as Tanzania, Burundi, Uganda and Zaire.