A zinc coating, usually hot-dipped, in which the zinc and steel form a metallurgical bond. The thickness of a hot-dipped coating can be varied from a thin zinc/iron alloy layer to heavy applications suitable for extended outdoor exposure.
Humid subtropical climate. In Africa, the humid subtropical climates are found in two separate areas on the southern hemisphere of the continent. The Cwa climate is found over a large portion of the interior of the Middle and Eastern African regions.
Most of the tropical rainforest s of Africa exist in the Congo (Zaire) River Basin. Remnants also exist throughout Western Africa which is in a sorry state due to the plight of poverty which encourages subsistence agriculture and firewood harvesting. This realm is dry and seasonal when compared to the other realms.