Why are plants that cross-pollinate better adapted for survival? A. They are biennials.
B. They have a lesser genetic diversity.
C. They are evergreen.
D. They are annuals
E. They have a greater genetic diversity.

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.