The answer is B.The respiratory system supplies the oxygen that the cardiovascular system transports to the different cells for the production of energy.
Just as animals, plants also contain vascular<span> tissues (</span>xylem<span>), which transports water and minerals up from the roots to the leaves, and </span>phloem<span>, which transports sugar molecules, amino acids, and hormones both up and down through the plant</span>
If a planet exists near a distant star, the star may have a very slight back and forth motion.
