What would be the complementary strand of mRNA?

Apart of an ecosystem that can restrict the growth of a population is referred to as

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?

Climate like that in the sahara desert have the fastest rates of weathering