Aquatic species that can tolerate freshwater and salt water would be well-adapted to which of the following aquatic environments? a. wetlands b. rivers c. estuaries d. oceans

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.