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Tropics. The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at 23°26′09.9″ (or 23.43609°) N and the Tropic of Capricorn in the Southern Hemisphere at 23°26′09.9″ (or 23.43609°) S. The tropics are also referred to as the tropical zone and the ...
Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. . Released in beta in November 2004, the Google Scholar index includes peer-reviewed online academic journals and books, conference papers, theses and dissertations, preprints, abstracts, technical reports, and other ...
Tropical rainforests have existed on earth for hundreds of millions of years. Most tropical rainforests today are on fragments of the Mesozoic era supercontinent of Gondwana. [13] The separation of the landmass resulted in a great loss of amphibian diversity while at the same time the drier climate spurred the diversification of reptiles. [10]
Tropical geography. Map showing the colonial statuses of the world in 1945 with the intertropical zone highlighted. Tropical geography refers to the study of places and people in the tropics. When it first emerged as a discipline, tropical geography was closely associated with imperialism and colonial expansion of the European empires as ...
Rainforest. A thick rainforest in Chiapas, Mexico. Olympic rainforest located at Olympic Peninsula, Washington state. Rainforest at Mount Palung National Park, Borneo. A paranomic view of the Tropical rainforest, Nilgiri mountains, India. Canopy of Khao Sok tropical rainforest. Primitive tropical rainforest in Palawan.
Deforestation or forest clearance is the removal and destruction of a forest or stand of trees from land that is then converted to non-forest use. [ 1] Deforestation can involve conversion of forest land to farms, ranches, or urban use. About 31% of Earth's land surface is covered by forests at present. [ 2]
This article contains a representative list of notable databases and search engines useful in an academic setting for finding and accessing articles in academic journals, institutional repositories, archives, or other collections of scientific and other articles. Databases and search engines differ substantially in terms of coverage and ...
Kegelkarst is a type of tropical karst terrain with numerous cone-like hills, formed by cockpits, mogotes, and poljes and without strong fluvial erosion processes. This terrain is found in Cuba, Jamaica, Indonesia, Malaysia, the Philippines, Puerto Rico, southern China, Myanmar, Thailand, Laos and Vietnam.