FRAGMENT FROM NATURE continues from last weekend and concludes this weekend on the theme of double fertilization in flowering plants (Angiosperms). It is an impressively complicated way to reproduce. One interpretation of the why, is that during evolution, various hybrid forms are stitched together, and the survivors are not always efficient, but represent combinations and work-arounds that were just compatible enough to survive. Nature and perfection are not the same thing; she is usually composed of bizarre genetic meldings from disparate beasts glued together by happenstance.