A rift valley is formed either due to upheaval of blocks on either sides of a fracture or due to subsidence of block between them.
The Lake is located in the Andes mountains near Bolivia-Peru border at a height of 3810 m. It is also the largest lake in South America.
Nearly 15% of the petroleum reserves are found in Soudi Arabia
Geysers are fountains of hot water and superheated steam that erupts with an explosion whereas hotsprings or thermal springs are found where water sinks deep enough the surface to be heated up by the interior forces and it comes out without any explosion. Iceland and New Zealand are the other countries having geysers while hot springs are relatively common.
A devastating series of earthquakes in 1906 ruined the city completely and its presence is a constant remainder of the past and a threat of repetition in future.
Of the two international ship canals, the Suez is more important than the Panama. Constructed over a period of 10 years according to a plan of the French Engineer Ferdinand de Lesseps, the Suez Canal was opened as early as 1869.
In Britain few of the Canals built during the early days of the Industrial Revolution are now playing an important role in the economy of the country. Example, Grand Union Canal.
Africa - 54 countries
South America - 12 countries
Antarctica - 0 countries
Europe - 43 countries.
Hence, Antarctica continent has the least countries.
Polar lights (aurora polaris) are a natural phenomenon found in both the northern and southern hemispheres that can be truly awe inspiring.
Northern lights are also called by their scientific name, aurora borealis, and
Southern lights are called aurora australis.
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