The corpus luteum produces progesterone. Progesterone makes the lining of the uterus thick for implantation and is necessary to sustain a healthy pregnancy. The corpus luteum produces progesterone until the placenta begins to take over progesterone production around ten weeks gestation.
Starting Salary. Individual salaries vary according to factors such as location and type of industry. Entry-level mechanical engineers holding bachelor's degrees earned average annual starting salaries of $58,600, according to the National Association of Colleges and Employers' Spring 2012 Salary Survey.
Overall Figures. In 2012, mechanical engineers earned an average salary of $84,770 annually, according to the Bureau of Labor Statistics. This represented an increase of 1.46 percent from the previous year, when the average salary was $83,550.The top 10 percent of earners made $121,530 or more a year in 2012.alaries by Degree. It should come as no surprise that a mechanical engineer's level of education can influence her pay. As already noted, salaries in mechanical engineering started at $61,300 a year in 2012. For those with a masterâs degree, however, the average starting salary was $75,700 a year.