In which year did the US run a trade deficit with Ghana? 1992 1996 2000 2004

Mark works as a freelance forensic scientist. he accepts cases on a contingency basis, which means that he is paid if a guilty verdict is returned based on the evidence he processes. which of the guiding principles has mark violated? mark has violated the guiding principle, which states that forensic scientists should refuse any cases on a contingency fee basis.