A scientific theory is a well-substantiated explanation of some aspect of the natural world that is acquired through the scientific method and repeatedly tested and confirmed, preferably using a written, pre-defined, protocol of observations and experiments.
Process Engineer Salary. A Process Engineer earns an average salary of $70,876 per year. A skill in Simulation is associated with high pay for this job. Most people move on to other jobs if they have more than 20 years' experience in this field. $52,970 - $97,247.
Whatâs the average starting salary for a petroleum engineer? 1  With a BS in Engineering, Petroleum Engineers can expect to start between $80,000-$85,000 BASE PAY. 2  In the early 2000s, the average starting salary was around $55,000, which means the increase in pay over the past decade is WAY above inflation. With a BS in Engineering, Petroleum Engineers can expect to start between $80,000-$85,000 BASE PAY. 2  This is one of the highest paying starting salaries with a bachelors degree available!!