Why does the tail appear when a comet nears the sun? A. The sun's magnetic force lights up the comet. B. The sun's gravitational force lights up the comet. C. The sun's light reflects off the gas and dust of the comet. D. The sun's energy burns up the comet.

Which series lists the correct order of steps of binary fission from first to last? sex pilus connects two cells ® plasmid dna is transferred ® complementary dna strands are created ® cells separate live cells bind to degraded cells ® dna is transported across the membrane ® dna is incorporated into recipient's dna virus infects bacterial cell, new viruses are made ® dna is assembled in new virus ® new virus infects another bacterial cell and transfers dna dna is copied ® dna molecules attach to cell membrane ® cell membrane elongates and pinches off ® two identical cells are produced