Discuss reasons why it might be useful to find out whether a newborn carries a specific gene or allele?

The chemical form of energy that is useable by the cell to do work

Which event would lead to primary succession of a forest?

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?