PLEASE EXPLAIN! Only one of the following statements is true: Identify the true statement and explain why it is true. a. Two organisms can be of different phylums but the same kingdom.
b. Two organisms can be of different kingdoms but the same phylum.

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.