How does the change in the temperature relate to the volume of gas in the balloon?

Which of the following is not a way in which a vascular plant's xylem and phloem are similar?

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

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.