Meiosis is a. the process that halves the number of chromosomes in cells b. the process by which diploid cells are produced c. important in asexual reproduction d. responsible for growth and repair of tissues

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands

maybe because its impossible for balloons to lift a whole entire house.