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Albania

Location: Southeast Europe Official name: Republic of Albania Formation (date of independence / date current borders were established): 1912 / 1921 Capital city: Tirana Population: 3.2 million / 302 people per sq mile (117 people per sq km) Total land area: 11,100 square miles (28,748 square km) Language(s) spoken: Albanian (official language), Greek Main religions: …

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Albedo

Albedo measures the Sun’s energy reflected by Earth’s surface, influencing climate and energy balance. Vegetation, ice, and urban areas play critical roles, with changes impacting global warming and weather patterns. For a detailed description, click on the article title.

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Alfisol soils

Alfisol soils, or chestnut soils, are fertile and versatile, supporting agriculture and biodiversity in steppe and temperate regions. Sustainable management ensures their productivity and ecological value. For a detailed description, click on the article title.

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Algeria

Location: North Africa Official name: People’s Democratic Republic of Algeria Formation (date of independence / date current borders were established): 1962 / 1962 Capital city: Algiers Population: 35.4 million / 38 people per sq mile (15 people per sq km) Total land area: 919,590 square miles (2,381,740 square km) Language(s) spoken: Arabic (official language), Tamazight (Kabyle, …

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Alluvial plain

Alluvial plains, formed by river-deposited sediments, are fertile and flat lands crucial for agriculture and biodiversity. These dynamic landscapes sustain both human societies and ecosystems. For a detailed description, click on the article title.

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Altitudinal zonation

Altitudinal zonation divides mountainous regions into distinct climate and ecological zones by elevation, shaping biodiversity, agriculture, and human livelihoods. Ethiopia and Bolivia exemplify these dynamic highland systems. For a detailed description, click on the article title.