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Until about two million years ago Africa's vegetation had always been controlled
by the interactions of climate; geology, soil, and groundwater conditions (edaphic
factors); and the activities of animals (biological factors). The addition of ...
Caroline Weaver— Ardea London Altitudinal modifications of vegetation are
clearly discernible on the high East African peaks near the equator (e.g.,
Kilimanjaro and Mounts Kenya and Elgon), and a rich forest belt — much
reduced upslope ...
During the wetter times (pluvials) in Africa equatorial forests spread, separating
northern woodlands from their southern counterparts (with consequent species
differentiation); mountain vegetation descended onto the plateaus; and there is ...
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The New Encyclopaedia Britannica (Encyclopaedia)User Review - Not Available - Book Verdict
For virtually all its 238 years,Britannica has ruled the shelves as a peerless general encyclopedia. Reviewers have consistently given it high marks for most of the 12 criteria identified inKister's ... Read full review