Answer:
In the south mid-latitude zone, the warmest conditions are found in the Central Africa (Sahara desert), middle East countries etc.
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By the change of environment , by the process
Rivers are lifelines in many dry regions of Africa. They provide the necessary water for agriculture, household uses, transport, and biodiversity. They fill the wetlands of inland and coastal deltas with fresh water, thereby maintaining the inhabitant’s livelihoods and biodiversity of these dynamic areas