Answer: Option C. -> Alps
Answer: (c)Mont Blanc, meaning 'White Mountain', is the highest mountain in the Alps, Western Europe, and the European Union. The Mont Blanc massif is being put forward as a potential World Heritage Site because of its uniqueness and its cultural importance, considered the birthplace and symbol of modern mountaineering.

Answer: Option B. -> 3 2 4 1
Answer: (b)
Thailand – Siam
Ghana – Gold Coast
Zambia – Northern Rhodesia
Japan – Nippon.

Answer: Option A. -> Dover strait — Arctic Sea and N. Atlantic Ocean
Answer: (a)
Dover strait – English channel and North sea. The Strait of Dover or Dover Strait is the strait at the narrowest part of the English Channel, marking the boundary between the Channel and the North Sea, separating Great Britain from continental Europe.

Answer: Option B. -> USA
Answer: (b)
Lake Superior is the largest of the five traditionally demarcated Great Lakes of North America. It is bounded to the north by the Canadian province of Ontario and the U.S. state of Minnesota, and to the south by the U.S. states of Wisconsin and Michigan.
It is generally considered the largest freshwater lake in the world by surface area. Lake Superior is the largest freshwater lake in the world in area (if Lakes Michigan and Huron are taken separately; see Lake Michigan–Huron), and the third-largest in volume, behind Lake Baikal in Siberia and Lake Tanganyika in East Africa.
The Caspian Sea, while larger than Lake Superior in both surface area and volume, is brackish.

Answer: Option B. -> British Columbia
Answer: (b)

Answer: Option D. -> Japan
Answer: (d)The island of Honshu is located in Japan.

Answer: Option D. -> Brazil and Paraguay
Answer: (d) Itaipu Dam is built on River Parana is the largest dam in the world. This is a joint project of Brazil – Paraguay.

Answer: Option D. -> Steppes
Answer: (d)Downs are grasslands in Australia while velds and prairies are grasslands in Southern Africa and Northern America respectively.

Answer: Option C. -> Pacific Ocean
Answer: (c)
The Mariana Trench or Marianas Trench is the deepest part of the world’s oceans. It is located in the western Pacific Ocean, to the east of the Mariana Islands.
The trench is about 2,550 kilometres long but has an average width of only 69 kilometres (43 mi). It reaches a maximum known depth of 10.994 km.
The trench is not the part of the seafloor closest to the centre of the Earth. This is because the Earth is not a perfect sphere: its radius is about 25 kilometres less at the poles than at the equator.
As a result, parts of the Arctic Ocean seabed are at least 13 kilometres (8.1 mi) closer to the Earth’s centre than the Challenger Deep seafloor.

Answer: Option B. -> excessive fuel wood collection
Answer: (b)
The main causes of total clearance are agriculture and in drier areas, fuelwood collection. The main cause of forest degradation is logging. Mining, industrial development and large dams also have a serious impact.
Tourism is becoming a larger threat to the forests. The United Nation’s Food and Agriculture Organisation estimates that ‘1.5 billion of the 2 billion people worldwide who rely on fuelwood for cooking and heating are overcutting forests’. This problem is worst in drier regions of the tropics.