History and extraction [edit]. The name tea tree is used for several plants, mostly from Australia and New Zealand, from the family Myrtaceae, related to the myrtle.The use of the name probably originated from Captain Cook 's description of one of these shrubs, that he used to make an infusion, to drink in place of tea.ea tree oil is toxic when taken by mouth, but is widely used in low concentrations in cosmetics and skin washes. Tea tree oil has been claimed to be useful for treating a wide variety of medical conditions.
While the average beginning salary for industrial-organizational psychologists with a masterâs degree is about $50,000, experienced industrial-organizational psychologists with a doctorate degree can earn up to $250,000 per year.owever, more and more school psychologists are earning doctorate degrees in psychology (PhD, PsyD or EdD). In addition to an advanced degree, many schools also require the completion of a 60-credit school psychology specialist program.
2016 Salary Information for Psychologists. Psychologists earned a median annual salary of $75,710 in 2016, according to the U.S. Bureau of Labor Statistics. On the low end, psychologists earned a 25th percentile salary of $56,390, meaning 75 percent earned more than this amount. The 75th percentile salary is $97,780, meaning 25 percent earn more.