Glaciers can only form when

a.
there is an ice age.
b.
there is a u-shaped valley in the mountains.
c.
the amount of snow exceeds the amount of rain.
d.
more snow falls than melts.

Air masses are characterized by various properties including temperature humidity air pressure and wind speed. which of the following air masses is associated with low relative humidity and high air temperature ?

Why is the indus river so important to the people of pakistan?

What does the map above tell us about the endemity of typhoid fever