Question 46 :
The tropical and temperate deserts of the world, occupy nearly ____ of the land surface of the worlds.
Question 47 :
The shortest day (longest night) in the southern hemisphere is
Question 48 :
The smallest glaciers are
Question 49 :
The time interval between one vernal equinox and the next is nearest to which of the following figures?
Question 50 :
Which of the following is measured on the Richter scale?