World Geography
The phenomenon of an opening occurring in the earth's surface through which a jet of hot water and steam is forces out at irregular intervals is called

volcano
crater
hot spring
geyser

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World Geography
What are secondary mineral deposits formed in caves called?

Pyroclastic debris
Ejecta Blanket
Speleogenesis
Speleothems

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World Geography
Which among the following statements is/are correct about the Gravity Model of Migration?According to the gravity model, the migration between two places is inversely proportional to the product of the population of the two centres.The gravity model implies that the capacity of an area to attract migrants depends upon the size of its population or its economic potential.Select the correct code from the options given below:

Only 2
Neither 1 & 2
Both 1 & 2
Only 1

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