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.
Average psychologist salary. The median expected salary for an average psychologist in the United States is about $82,978 per year. Average annual salary for a psychologist ranges from between $68,640 to $90,000 and an hourly wage ranges from between $33 to $60 per hour.sychologist salary in United Kingdom (UK). The average expected salary for a psychologist in the United Kingdom is about Â£35,350 per annum. According to all salary survey, the median salary for a psychologist is about Â£32,000 per year.