What change would most improve the usefulness of the graph? replace the concentration descriptions with actual values. plot contractions per second instead of contractions per minute. remove the plotted points and just keep the line. remove the name of the organism from the title.

Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.