How is the complementarity of nucleotides important in replication? What would happen if this complementarity did not exist, and nucleotides paired up randomly instead?​

Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

The cluster of developing cells from conception until birth is called an

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?