Describe a situation where hybrid reproduction would cause two species to fuse into one.

Which would be the most useful source of evidence to support mcneill's contention?

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?

How are fossils most commonly formed