To locate the epicenter of an earthquake a seismologist must determine all of the following except a the difference in the arrival times in the p and s waves b seismograph data from the locations c the distance from the epicenter to three different seismograph locations d the intensity of the earthquake

Which of the following best describes the purpose of the parathyroid hormone? a. it decreases the blood calcium level and decreases blood phosphorus level. b. it decreases the blood calcium level and increases the blood phosphorus level. c. it increases the blood calcium level and increases blood phosphorus level. d. it increases the blood calcium level and decreases blood phosphorus level.