Darwin proposed a new theory of how evolution works. What theory is this?

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

What are 3 reasons that natural selection occurs

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.