Burning fossil fuels accelerates the carbon cycle by putting more carbon dioxide into the air true false ?

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.

By going through the process of cellular respiration the cell can gain molecules of atp.

What do you call the long folded tube inside the body attached to the stomach where nutrients in the food are absorbed?