<span>Ocean current circulations move warm water toward the poles and colder water toward the equator.</span>
Volcanic soil has a lot of minerals that plants take in as nutrients.
After the rise of Islam in the Hejaz, Arab culture and language were spread outside the Arabian Peninsula through conquest, trade and intermarriages between members of the non-Arab local population and the peninsular Arabs. The Arabic language began to serve as a lingua franca in these areas and dialects were formed.
T<span>he Great Migration (in East Africa, mainly Kenya and Tanzania) is principally herds of wildebeest and zebra following their food and water supply.</span>
