What do you know about Indus Valley Civilization?  Indus civilization is one of the four earliest civilizations of th…

What do you know about the sun?     Can you imagine the world without any sunlight? Plants and humans would not survi…

Why don’t all clouds produce rain?  A cloud is simply an accumulation of mist. Water is always present in the air. Du…

What is snowline?   Snow line, the lower geographical constraint of long-lasting snow cover. The snow line is an unpr…