The structure of dna resembles a twisted ladder. which structural components form the rungs of the ladder?

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

How is the motion of the particles of water at 80 ⁰c different from the motion of the particles of water when it is 30 ⁰c?

As global warming continues the ocean absorbs more of the earth's heat what term describes the ocean as a storage location for heat a) heat binb) heat sinkc) heat storaged) heat vent( answer this for me)