The fact that the zodiac killer was a male suspect was determined by
a. fingerprints left upon the cars from two attacks
b. eye witness accounts from two attack survivors
c. pubic hairs left upon the clothing of two victims
d. dna evidence from a hair recovered from a victim

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?

All ova contain sex chromosomes corresponding to: x y xx xy

Kudzu vines grow by climbing and wrapping around trees. trees covered by kudzu can die because they are starved of sunlight. what type of relationship exists between the trees and the kudzu growing on them?