Surface tension causes water to spread out is the ability of water to dissolve a substance creates a thin, elastic layer of hydrogen atoms is caused by cohesion between water molecules on the surface.

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?