Question

what are the major determinate of earnings

Answer 1

Two determination of earning of an individual in the market are as follows:

Skill: Skill is the most and necessary thing in the any profession. Skill helps an individual on their growth. And also the skills help an individual to do the activity or task in a good manner.  

Knowledge:  Knowledge is the basic thing which is the information about a subject through the education or experience. Through knowledge only one can implement their skills and then grow.