Transition zone (Earth), a part of the Earth's mantle located between the lower mantle and the upper mantle. Transition zone, the region between the near and far fields of a transmitting antenna. Transition zone (TZ), a glandular region of the prostate— see Prostate#Zones. Zone of transition, a zone in urban planning.
The Sahel is a semiarid band of land stretching across northern Africa at roughly the 13th parallel, dividing the Sahara desert from Africa's tropical forests. The word "Sahel," which means "shore" in Arabic, connotes more than simple topology.
The Harmattan is a season in the West African subcontinent, which occurs between the end of November and the middle of March. It is characterized by the dry and dusty northeasterly trade wind, of the same name, which blows from the Sahara Desert over West Africa into the Gulf of Guinea.
to convert (animals, plants, etc.) to domestic uses; tame.
the belief that natural objects, natural phenomena, and the universe itself possess souls.
sanitation. noun. The study and application of procedures and measures designed to protect public health, as in the provision of clean water and the disposal of sewage and waste. The disposal of sewage and waste.
patriarchal - characteristic of a form of social organization in which the male is the family head and title is traced through the male line. paternal - characteristic of a father. matriarchal - characteristic of a matriarchy
a group of families or households, as among the Scottish Highlanders, the heads of which claim descent from a common ancestor: ... a group of people of common descent; family: Our whole clan got together for Thanksgiving.
A nuclear family, elementary family or conjugal family is a family group consisting of two parents and their children (one or more). It is in contrast to a single-parent family, to the larger extended family, and to a family with more than two parents.
Geographic tongue (also known as benign migratory glossitis) is an inflammatory disorder that usually appears on the top and sides of the tongue. ... Occasionally, similar appearing lesions occur on other oral sites, such as the palate, cheeks, under the tongue, or on the gums.
Subsistence agriculture is a self-sufficiency farming system in which the farmers focus on growing enough food to feed themselves and their entire families. ... The typical subsistence farm has a range of crops and animals needed by the family to feed and clothe themselves during the year.
Desertification is a type of land degradation in which a relatively dry area of land becomes increasingly arid, typically losing its bodies of water as well as vegetation and wildlife.
a large elongated depression with steep walls formed by the downward displacement of a block of the earth's surface between nearly parallel faults or fault systems.
In geology, a fault is a planar fracture or discontinuity in a volume of rock, across which there has been significant displacement as a result of rock-mass movement. ... Energy release associated with rapid movement on active faults is the cause of most earthquakes.
An escarpment is a steep slope or long cliff that forms as an effect of faulting or erosion and separates two relatively level areas of differing elevations. Usually escarpment is used interchangeably with scarp.
The cataracts of the Nile are shallow lengths (or white water rapids) of the Nile River, between Aswan and Khartoum, where the surface of the water is broken by many small boulders and stones jutting out of the river bed, as well as many rocky islets.
originating in and characteristic of a particular region or country; native (often followed by to): the plants indigenous to Canada; the indigenous peoples of southern Africa. ... feelings indigenous to human beings.
A medium of communication between peoples of different languages.
crops where the seeds are the main product e.g. wheat, corn. Commercial Farming: farming for a profit, where food is produced by advanced technological means for sale in the market. ... (See Subsistence Farming). Market Gardening in the Barcelona area is an example of commercial fa
The area or natural environment in which an organism or population normally lives. A habitat is made up of physical factors such as soil, moisture, range of temperature, and availability of light as well as biotic factors such as the availability of food and the presence of predators.
he carrying capacity of a biological species in an environment is the maximum population size of the species that the environment can sustain indefinitely, given the food, habitat, water, and other necessities availabl
Poaching has traditionally been defined as the illegal hunting or capturing of wild animals, usually associated with land use rights.
Alluvial plain, formed over a long period of time by a river depositing sediment on its flood plain or bed which becomes alluvial soil. ... Flood plain, adjacent to a stream, river, lake or wetland that experiences occasional or periodic flooding.
Blood diamonds, also known as conflict diamonds, are defined by the UN as gems that originate from areas controlled by forces or factions opposed to legitimate and internationally recognised governments, and are used to fund military action against those governments, or in contravention of the decisions of the UN .
The definition of infrastructure is the basic facilities and installations that help a government or community run, including roads, schools, phone lines, sewage treatment plants and power generation. An example of infrastructure is the basic roads and power lines for a new housing development.
noun. a member of a hereditary caste among the peoples of western Africa whose function is to keep an oral history of the tribe or village and to entertain with stories, poems, songs, dances,
e-commerce - commerce conducted electronically (as on the internet) commerce, commercialism, mercantilism - transactions (sales and purchases) having the objective of supplying commodities (goods and services)
Erosion is the process that breaks things down. As far as we're concerned, erosion is the breakdown of the continents and the land around you. The overall effect of breaking down and weathering the land is called denudation. Denudation is the process of erosion.
The industry or occupation devoted to the catching, processing, or selling of fish, shellfish, or other aquatic animals
A basin is a depression, or dip, in the Earth's surface. ... The major types of basins are river drainage basins, structural basins, and ocean basins. River Drainage Basins. A river drainage basin is an area drained by a river and all of its tributaries. A river basin is made up of many different watersheds.
Definition of montane. 1 : of, relating to, growing in, or being the biogeographic zone of relatively moist cool upland slopes below timberline dominated by large coniferous trees.
covering, usu. of fabric, supported on poles or suspended above a bed, throne, exalted personage, or sacred object. 2. a long awning stretching from the doorway of a building to a curb. 3. an ornamental, rooflike projection or covering.
The structure involves a dense overhead canopy and an understory dense enough to greatly reduce the wind. ... The plant is a small understory tree found only on the main island of New Caledonia in the South Pacific.
A cash crop or profit crop is an agricultural crop which is grown for sale to return a profit. ... The term is used to differentiate marketed crops from subsistence crops, which are those fed to the producer's own livestock or grown as food for the producer's family.
a usually large farm or estate, especially in a tropical or semitropical country, on which cotton, tobacco, coffee, sugar cane, or the like is cultivated, usually by resident laborers. 2. a group of planted trees or plants. 3.
internally displaced person
Internally displaced person. ... An internally displaced person (IDP) is someone who is forced to flee his or her home but who remains within his or her country's borders. They are often referred to as refugees, although they do not fall within the legal definitions of a refugee.
A fuel, such as biogas or biodiesel, that is produced from renewable resources, especially plant biomass, vegetable oils, or treated municipal and industrial wastes.
A Delta is a landform that forms from deposition of sediment carried by a river as the flow leaves its mouth and enters slower-moving or standing water. This occurs where a river enters an ocean, sea, estuary, lake, reservoir, or (more rarely) another river that cannot transport away the supplied sediment.
a climate distinguished by warm, wet winters under prevailing westerly winds and calm, hot, dry summers, as is characteristic of the Mediterranean region and parts of California, Chile, South Africa, and southwestern Australia.
a region having little rainfall because it is sheltered from prevailing rain-bearing winds by a range of hills
the process of making an area more urban.
Cereals: crops where the seeds are the main product e.g. wheat, corn. Commercial Farming: farming for a profit, where food is produced by advanced technological means for sale in the market. Often very few workers are employed. (See Subsistence Farming).
changing, especially unpredictably.
prepare and use (land) for crops or gardening.
water held underground in the soil or in pores and crevices in rock.