world physical geography section 6 MCQ Questions & Answers Detailed Explanation

Answer: (c)

Answer: (d)

Lake Victoria acts as the international boundary between Tanzania and Uganda. It is the largest lake in Africa and second widest fresh water body in the world.

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.

Answer: (d)

The Blind valley is found in the karst region. Karst topography is a geological formation shaped by the dissolution of a layer or layers of soluble bedrock, usually carbonate rock such as limestone or dolomite, but also in gypsum.

Answer: (b)

Sundarbans is the world’s largest delta formed by the rivers Ganges, Brahmaputra and Meghna.

Answer: (c)

France began work on the Panama Canal in 1881 but had to stop because of engineering problems and high mortality due to disease.

The United States took over the project in 1904 and took a decade to complete the canal, which was officially opened on August 15, 1914. The Panama Canal connects the Atlantic Ocean (via the Caribbean Sea) to the Pacific Ocean.