Question

I am a six letter word..first 3 letters indicates biggest thing in the world..2,3,4 letter indicates part of human body...3,4,5 letter indicates part of a circle.. the whole word is the key for Internet now

Answer 1

1.SEA
2.EAR
3.ARC
4.SEARCH

Answer 2

1=sea
2=ear
3=arc

ans=Search