Wind and moving water provide what kind of energy? a. chemical b. mechanical c. thermal d. none of the above

How are mutations continually being generated in a population (what are some of the causes of mutatuions? ) explain

The illustration shown is an ovum, a female sex cell. a mutation in this cell may be passed to the woman’s offspring during a) birth. b) mitosis. c) dna replication. d) sexual reproduction

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?