a) One medium is air, in which light has a speed of 3.00 x 108 m/s. The other medium is ice, in which light has a speed of 2.29 x 108 m/s. Use this information to identify medium A and medium B. Explain

All organisms contribute some water to the water cycle by conducting

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?

Which number represents a basic ph, 4 or 9? numerical answers expected! answer for blank 1: i'll give