â The presence of marijuana is detected by a drug test through the presence of the active chemical THC or Tetrahydrocannabinol. Technically, what is detected is known as THC-COOH (11-nor-delta-9-tetrahydrocannabinol-9-carboxylic acid).
1 Average Riding Instructor Salary: Independent riding instructors typically charge an hourly rate for services but on average earn about $35,000 to $39,000 per year.
How Much Will I Earn as An Animal Trainer? According to the U.S. Bureau of Labor Statistics, as of 2013, animal trainers who were employed by individuals who needed personal services earned an average of $35,030 a year, while those who trained animals for spectator sports took home an average of $34,390.