Environment

With an area of 348,750 square km, the Great Victoria Desert is Australia's largest desert.

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Gorilla populations in most parts of their range have fallen drastically due to human activities and interference.

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Only a few mountains of the world are left unclimbed by humans.

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Pelicans are any of the eight species of large and graceful birds of the family Pelecanidae.

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Landforms of depositions occur when there is more sand accumulated on a landform than there is removed.

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Loons are aquatic birds of the genus Gavia that are found in North America and northern Eurasia.

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The following animals are listed by the IUCN Red List as being extinct in the wild.

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Five extant species of tapir including four New World and one Old World species live in the world today.

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The variations in elevation, temperature, rainfall, and soil divides the Sahara Desert into several distinct ecoregions with distinct communities of plants and animals.

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The Sahara Sea is a hypothetical macro-engineering project that proposed the usage of the waters from the Atlantic Ocean or Mediterranean Sea to flood the Sahara's endorheic basins.

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Porpoises are marine cetaceans that are closely related to the dolphins, and include the world's rarest cetacean, the vaquita.

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Running at a speed of 23 km/h, the highly venomous snake of Africa, the black mamba is one of the world's fastest living reptiles.

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Unconstrained development and massive deforestation of land in the 21st century has resulted in a high number of casualties due to landslides.

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In geology, permafrost refers to ground (rock or soil) that has a temperature of 0 °C (32 °F) or lower for two or more years.

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Silicon is used to form many important materials, such as clay and stone.

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Tropicbirds are sea birds living and nesting in the tropical islands and oceans of the world.

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There are five species of frigatebirds, seabirds found over the sub-tropical and tropical oceans of the world.

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Godwits are migratory birds of the genus Limosa.

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The pygmy falcon holds the title of the smallest raptor in Africa.

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Stalactites are of different types based on composition and process of formation of the structures.

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