Solve for b
s=n/2(a+b)

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species

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.

Add solid urea to a beaker of water. the beaker gets very cold. is δh favorable or