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.
Those interested in a doctoral degree in psychology should know that industrial-organizational psychology is a quickly-growing area of the field, with a 26% increase in demand expected by 2020. The median wage in this field was $77,000 in 2010, and it is believed that the top 10% earned over $148,000.87,300 for industrial-organizational psychologists. $66,800 for clinical, counseling and school psychologists. $89,000 for all other types of psychologists. BLS states that about 50% of psychologists earn between $48,000 and $82,000.