south polar cap

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• Polar ecology — is the relationship between plants and animals in a polar environment. Polar environments are in the Arctic and Antarctic regions. Arctic regions are in the northern hemisphere, and it contains land and the islands that surround it. Antarctic is… …   Wikipedia

• South Africa — Republic of, a country in S Africa; member of the Commonwealth of Nations until 1961. 42,327,458; 472,000 sq. mi. (1,222,480 sq. km). Capitals: Pretoria and Cape Town. Formerly, Union of South Africa. * * * South Africa Introduction South Africa… …   Universalium

• South Pole — Pôle Sud Pour les articles homonymes, voir Pôle (homonymie). Carte de l Antarctique indiquant la position du pôle Sud. Le pôle Sud est le point le plus au sud de la surface de la Terre …   Wikipédia en Français

• Polar ice cap — A polar ice cap is a high latitude region of a planet or moon that is covered in ice. There are no requirements with respect to size or composition for a body of ice to be termed a polar ice cap, nor any geological requirement for it to be over… …   Wikipedia

• Polar region — Earth s polar regions are the areas of the globe surrounding the poles also known as frigid zones. The North Pole and South Pole being the centers, these regions are dominated by the polar ice caps, resting respectively on the Arctic Ocean and… …   Wikipedia

• polar ecosystem — Introduction       complex of living organisms in polar regions such as polar barrens and tundra.  Polar barrens and tundra are found at high latitudes on land surfaces not covered by perpetual ice and snow. These areas lying beyond the tree line …   Universalium

• Polar climate — Regions with a polar climate are characterized by a lack of warm summers (specifically, no month having an average temperature of 10 °C or higher).The tundra covers over 20% of the earth. The sun shines 24 hours in the summer, and barely shines… …   Wikipedia

• Polar coordinate system — Points in the polar coordinate system with pole O and polar axis L. In green, the point with radial coordinate 3 and angular coordinate 60 …   Wikipedia

• South Pole — 1. Geog. the southern end of the earth s axis, the southernmost point on earth. 2. Astron. the point at which the axis of the earth extended cuts the southern half of the celestial sphere; the south celestial pole. 3. (l.c.) the pole of a magnet… …   Universalium

• polar region — noun the part of the Earth s surface forming a cap over a pole; characterized by frigid climate • Syn: ↑Frigid Zone, ↑polar zone • Hypernyms: ↑climatic zone • Instance Hyponyms: ↑Antarctic, ↑Antarctic Zone, ↑ …   Useful english dictionary

• polar zone — noun the part of the Earth s surface forming a cap over a pole; characterized by frigid climate • Syn: ↑Frigid Zone, ↑polar region • Hypernyms: ↑climatic zone • Instance Hyponyms: ↑Antarctic, ↑Antarctic Zone, ↑ …   Useful english dictionary