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One of the following regions has the world’s largest tropical peatland, which holds about three years worth of global carbon emissions from fossil fuels; and the possible destruction of which can exert detrimental effect on the global climate.

Which one of the following denotes that region?
  1. Amazon Basin
  2. Congo Basin
  3. Kikori Basin
  4. Rio de la Plata Basin

Explanation

Option (b) is correct
  • The Congo Basin is home to the world’s largest tropical peatlands, along with Brazil and Indonesia. The peat swamp forest of the Congo Basin stores around 29 billion tons of carbon – approximately equivalent to three years’ worth of global greenhouse gas emissions – while the Basin as a whole absorbs nearly 1.5 billion tons of carbon dioxide a year.

Map showing Republic of the Congo and Democratic Republic of the Congo highlighted in yellow within Central Africa, with surrounding countries and Atlantic Ocean labeled in dark gray. Congo River is marked in blue flowing through both countries, with an inset map indicating the region's location in Africa

Additional Information

  • Located in Central Africa, the Congo Basin is home to the world’s second-largest rainforest.
  • It covers six countries: Cameroon, Central African Republic, Democratic Republic of the Congo, Republic of the Congo, Equatorial Guinea, and Gabon.
  • The Congo Basin is the world’s second-largest carbon sink.
  • The Congo River (formerly the Zaire River) is the second-longest river in Africa.
    • It is the third-largest river in the world by discharge volume, following the Amazon and Ganges.
    • It is also the deepest river in the world.
    • It rises in the highlands of Zambia between Lakes Tanganyika and Nyasa (Malawi) as the Chambeshi River and drains into the Atlantic Ocean.
Option (a) is incorrect
  • The Amazon Basin is the largest ecosystem and tropical forest on the Earth.
  • It covers 9 countries: Brazil (60% of the Amazon rainforest), Peru, Ecuador, Colombia, Venezuela, Bolivia, French Guiana, Suriname, and the Republic of Guyana.
  • The Amazon River is the largest drainage system in the world in terms of the volume of its flow and the area of its basin.
    • Located in South America, it is the second-longest river in the world.
    • It originates in the Peruvian Andes and drains into the Atlantic Ocean.
    • It produces about 20% of the world’s freshwater flow into the oceans.
Option (c) is incorrect
  • The Kikori Basin stretches for over almost 23,300 km2 in Papua New Guinea’s (PNG) Southern Province.
  • The Kikori River is 445 km in length and is Papua New Guinea’s fifth largest river.
Option (d) is incorrect
  • The Río de la Plata drainage basin is one of the five greatest drainage basins in the world with special particularities to be recognized and admired.
  • It is formed by the discharge of waters from five countries — Argentina, Brazil, Uruguay, Bolivia and Paraguay — extending over some 3,100,000 km2.
Answer: (b) Congo Basin: Difficulty Level: Hard
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