Fill in the blank. the of animals is based on scientists' current understanding of the evolutionary history of living species. although they are radially symmetrical, echinoderms are more closely related to a human than to a jellyfish because they are

Which enzymes break down carbohydrates?

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 was not a reason why canals were built in florida