Deserts & Grasslands — Set 2

Correct Answer: A. Australia

• **Downs** = temperate grasslands in the Murray-Darling basin of Australia, crucial for sheep rearing and wheat production. • **Murray-Darling Basin** — the Murray-Darling basin is the most significant agricultural region in Australia, producing the majority of the country's wheat and wool; the Downs are its characteristic grasslands. • 💡 Wrong-option analysis: New Zealand: its famous grasslands are the Canterbury Plains on South Island; Hungary: its temperate grasslands are called Puszta; South Africa: its temperate grasslands are called Veld.

Correct Answer: D. Andes

• **Andes Mountains** = block moisture from the Pacific Ocean, creating the rain shadow effect that results in the Patagonian Desert in eastern Argentina. • **Rain Shadow Effect** — as moist Pacific air rises over the Andes, it cools and drops rain on the western (Chilean) side; the eastern Argentine side receives very little moisture, creating the desert. • 💡 Wrong-option analysis: Alps: European mountain range between France, Switzerland, and Austria; creates rain shadow effects in Europe, not South America; Rockies: North American range creating the Great Basin Desert rain shadow; Himalayas: Asian range creating rain shadow deserts in Tibet and Central Asia.

Correct Answer: B. South America

• **Llanos** = vast tropical grassland plains in Colombia and Venezuela, located east of the Andes, seasonally flooded by the Orinoco River system. • **Orinoco River** — the Orinoco River is the primary drainage system of the Llanos; during the rainy season much of the region is flooded, creating a unique wetland-grassland ecosystem. • 💡 Wrong-option analysis: Europe: has Puszta (Hungary) and Steppes (eastern regions); Asia: has Steppes (Eurasia) and various subtropical grasslands; Africa: has Savanna (tropical) and Veld (temperate southern).

Correct Answer: C. Arabian Desert

• **Arabian Desert** = vast desert covering the Arabian Peninsula, bounded by the Red Sea (west) and the Persian Gulf (east), containing the Rub' al Khali (Empty Quarter). • **Rub' al Khali** — the Rub' al Khali (Empty Quarter) within the Arabian Desert is the world's largest continuous sand body, covering about 650,000 sq km with dunes up to 250 m high. • 💡 Wrong-option analysis: Chihuahuan Desert: in southwestern USA and northern Mexico; Thar Desert: between India and Pakistan in South Asia; Karakum Desert: in Turkmenistan, Central Asia, known for the 'Door to Hell' gas crater.

Correct Answer: B. Puszta

• **Puszta** = large grassy plain in eastern Hungary, part of the Great Hungarian Plain, characterized by alkali steppes and wetlands, now protected within Hortobágy National Park. • **UNESCO World Heritage** — the Hortobágy National Park (the Puszta) is a UNESCO World Heritage site; it is the largest semi-natural grassland in Europe and a center of traditional pastoral culture. • 💡 Wrong-option analysis: Prairies: temperate grasslands of central North America (USA-Canada); Pampas: temperate grasslands of Argentina in South America; Steppes: vast temperate grasslands of Eurasia (Eastern Europe to Central Asia).

Correct Answer: B. Africa

• **Namib Desert** = coastal desert in Southern Africa (primarily Namibia), one of the oldest deserts in the world, famous for extremely high sand dunes and fog-based moisture. • **~55 million years old** — the Namib is one of the world's oldest deserts, possibly 55-80 million years old; it receives moisture primarily through coastal fog from the Benguela Current rather than rainfall. • 💡 Wrong-option analysis: South America: its coastal desert is the Atacama (Chile/Peru), the driest on Earth; North America: has the Sonoran and Mojave deserts but they are not coastal in the same sense; Australia: its deserts (Gibson, Simpson, Great Sandy) are inland, not coastal.

Correct Answer: C. New Zealand

• **Canterbury Plains** = extensive grasslands on the South Island of New Zealand, a major center for intensive livestock farming and crop production. • **South Island** — the Canterbury Plains were formed by glacial debris outwash from the Southern Alps; they are New Zealand's most intensively farmed region for wheat, barley, and sheep. • 💡 Wrong-option analysis: Australia: its grasslands include the Downs (Murray-Darling) and Mitchell Grass Downs; United Kingdom: its grasslands include the South Downs (chalky hills in southern England); Canada: its temperate grasslands are part of the North American Prairies.

Correct Answer: C. Mojave Desert

• **Mojave Desert** = smallest and driest desert in North America, covering parts of California and Nevada, home to Death Valley and the iconic Joshua tree. • **Death Valley** — Death Valley in the Mojave Desert holds the world record for highest reliably recorded air temperature (56.7°C in 1913) and sits 86 m below sea level. • 💡 Wrong-option analysis: Atacama Desert: in northern Chile, South America, the driest non-polar desert; Gobi Desert: cold desert in China and Mongolia, the largest cold desert outside polar regions; Namib Desert: coastal desert in Namibia, southern Africa.

Correct Answer: A. Amazon River

• **Selvas** = dense equatorial rainforests of the Amazon Basin (Brazil), characterized by heavy rainfall and high biodiversity throughout the year. • **Amazon Basin** — the Amazon Basin covers about 7 million sq km; the Selvas contain approximately 10% of all species on Earth and produce about 20% of the world's oxygen. • 💡 Wrong-option analysis: Congo River: its basin contains the Congo Rainforest in Africa, not called Selvas; Mississippi River: drains the central plains of North America, no tropical forest ecosystem; Nile River: flows through arid North Africa, surrounded by desert.

Correct Answer: D. Dasht-e Kavir

• **Dasht-e Kavir** = Great Salt Desert in central Iran, a harsh salt-crust desert with extreme heat and minimal vegetation, one of Earth's most inhospitable regions. • **Salt crust** — Dasht-e Kavir (meaning 'Great Salt Desert') is characterized by a hard salt crust; it covers about 77,000 sq km of the central Iranian plateau. • 💡 Wrong-option analysis: Karakum: in Turkmenistan, Central Asia, known for the Darvaza 'Door to Hell' gas crater; Thar: between India and Pakistan, the world's most densely populated desert; Kyzylkum: in Uzbekistan-Kazakhstan, Central Asia, meaning 'Red Sand'.