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.
AFROTROPICAL REALM. The vast majority of Africa's tropical moist and tropical rainforests exist in West and Central Africa. However, those are rapidly vanishing; according to the FAO, Africa lost the highest percentage of rainforests during the 1980s of any biogeographical realm, a trend that continued from 1990-1995.