What are the two main groups of sedimentary rocks?

Why is it important that fibrin is insoluble in water?

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.

Which statements best describe the atoms of the gas neon? check all that apply