. Babies with very low or very high birth weight are less likely to survive. The graph shows the percentage of babies
born at different weights.

Which statement is a valid claim that could be made using the data in the graph?
Directional selection is occurrina because the araph favors an extreme.

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?