What is the total number of latitudes?

On what percentage of the earth's surface is the expansion of continents found?

Which element is found in abundance in the earth's crust?

How many km stretch of the venue. To the depth of?

What of the following biomes does not have a tree?

The Nohkali waterfall is in which state?

583 : 483 : : 293 : ?

The respective ratio of, the present age of a mother and daughter is 7 : 1. Four years ago the respective ratio of their age was 19 : 1. What will be the mother’s age four years from now?