The shared genetic code of all life on earth is evidence that

a. the genetic code arose relatively late in the history of life on earth
b. dna replication is error-free
c. all life shares a common ancestry bacterial
d. cells arose earlier than eukaryotic cells

Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit