India accounts for half of the world's total number of :

 

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.

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.

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.

The sea water contains 18.98 parts per thousand of chlorine, 10.56 parts per thousand of sodium  and 1.27 parts per thousand of magnesium.

Nearly 15% of the petroleum reserves are found in Soudi Arabia

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.

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.