Why does crude oil contain sulfur?

Why does crude oil contain sulfur?

Why does crude oil contain sulfur?
Why does crude oil contain sulfur?

 

READ ALSO :   A coil of current-carrying Nichrome wire is immersed in a liquid. (Nichrome is a nickel–chromium–iron alloy commonly used in heating elements.) When the potential difference across the coil is 12 V and the current through the coil is 5.2 A, the liquid evaporates at the steady rate of 21 mg/s. Calculate the heat of vaporization of the liquid (see Section 18-8).