climatic zonation

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• Western Africa — ▪ region, Africa Introduction       region lying south of the Sahara and east and north of the Atlantic Ocean. It is latitudinally divided into two parallel belts of land: the western portion of the Sudan, a geographic area that stretches across… …   Universalium

• Silurian Period — Interval of geologic time, 443–417 million years ago. The third period of the Paleozoic Era, the Silurian follows the Ordovician Period and precedes the Devonian. It marks the first appearance of land plants and jawed fishes. The continents were… …   Universalium

• North America — North American. the northern continent of the Western Hemisphere, extending from Central America to the Arctic Ocean. Highest point, Mt. McKinley, 20,300 ft. (6187 m); lowest, Death Valley, 276 ft. (84 m) below sea level. 400,000,000 including… …   Universalium

• Biome — The planet Earth Biomes are climatically and geographically defined as similar climatic conditions on the Earth, such as communities of plants, animals, and soil organisms,[1] and are of …   Wikipedia

• plant — plantable, adj. plantless, adj. plantlike, adj. /plant, plahnt/, n. 1. any member of the kingdom Plantae, comprising multicellular organisms that typically produce their own food from inorganic matter by the process of photosynthesis and that… …   Universalium

• GEOGRAPHICAL SURVEY — Names The name Ereẓ Israel (the Land of Israel) designates the land which, according to the Bible was promised as an inheritance to the Israelite tribes. In the course of time it came to be regarded first by the Jews and then also by the… …   Encyclopedia of Judaism

• biogeographic region — Introduction       area of animal and plant distribution having similar or shared characteristics throughout.       It is a matter of general experience that the plants and animals of the land and inland waters differ to a greater or lesser… …   Universalium

• Intertidal ecology — is the study of intertidal ecosystems, where organisms live between the low and high tide lines. At low tide, the intertidal is exposed (or ‘emersed’) whereas at high tide, the intertidal is underwater (or ‘immersed’). Intertidal ecologists… …   Wikipedia

• Triassic Period — Interval of geologic time, с 248–206 million years ago, that marks the beginning of the Mesozoic Era. Many new vertebrates emerged during the Triassic, heralding the major changes that were to occur in both terrestrial and marine life forms… …   Universalium

• Mont Kenya — Pour les articles homonymes, voir Kenya (homonymie). Mont Kenya Soleil levant sur le mont Kenya. Géogr …   Wikipédia en Français

• Devonian Period — Interval of geologic time from 417 to 354 million years ago; it was the fourth period of the Paleozoic Era. During the Devonian, a giant continent was situated in the Southern Hemisphere (see Gondwana), and other landmasses were located in the… …   Universalium