Which part of a green plant loses the most chloroplasts at the end of summer?

There are six elements that make up most of the human body. which of the following is not one of these six elements?

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this

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.