Armenia is a landlocked country located in the South Caucasus region of Eurasia. While it maintains strong political and cultural ties with Europe and is a member of the Council of Europe, it is geographically situated in Western Asia, east of Turkey and north of Iran, making it distinct from the European continent.

The Pampas are fertile South American lowlands that cover more than 1,200,000 square kilometers, including the Argentine provinces of Buenos Aires, La Pampa, Santa Fe, Entre Ríos, and Córdoba. These grasslands are a classic example of a temperate biome characterized by rich soils and a climate suitable for extensive agriculture and livestock grazing.

The Tibetan Plateau, often referred to as the 'Roof of the World,' is the highest and largest plateau on Earth. It covers a vast area in Western China and is formed by the ongoing tectonic collision between the Indian and Eurasian plates.

Undernourishment is a condition where an individual's dietary energy intake is consistently below the minimum requirement to maintain a healthy life and carry out light physical activity. This term is widely used by international organizations like the FAO to describe populations suffering from chronic food deprivation.

Tropical grasslands, such as the Cerrado in southern Brazil and the Llanos in Venezuela, are characterized by distinct wet and dry seasons. These biomes support grasses and scattered trees, thriving in regions that receive moderate annual rainfall but experience prolonged dry periods that prevent the development of dense tropical forests.

The Central Business District (CBD) is the commercial and economic heart of a city. It typically features high land values, tall buildings, and a concentration of retail, office, and financial services, serving as the primary hub for business activity and accessibility.

Overgrazing occurs when plants are exposed to intensive grazing for extended periods, or without sufficient recovery periods. This practice damages the vegetation cover, leads to soil compaction, increases erosion, and can eventually result in desertification, making the land less productive and unable to support future plant growth.

Land reclamation is the process of creating new land from oceans, riverbeds, or lake beds. This is typically achieved by depositing large amounts of rock, soil, or cement into the water body to raise the elevation above the water level. It is commonly used in coastal cities to expand urban areas or create space for infrastructure development.

The distance between New York and London is approximately 5,500 to 5,600 kilometers. Dividing this distance by an average speed of 800 km/h yields approximately 7 hours of flight time. While actual flight times vary due to wind patterns like the jet stream and air traffic control, 7 hours is a standard estimation for this transatlantic route.

Asia contains many of the world's most polluted rivers due to rapid industrialization, high population density, and inadequate wastewater treatment infrastructure. Rivers like the Ganges, Yangtze, and Citarum face severe contamination from industrial effluents, agricultural runoff, and untreated sewage. While pollution is a global issue, the scale and concentration of pollutants in major Asian river systems are statistically significant.