Why does the modern model of the atom use an electron cloud? A Electron location is visualized as a 95% probability. B Electrons produce a gas around the nucleus. C Electrons block sunlight and this act like a cloud.

Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?