Bacteria can be beneficial. which of these is an example of how bacteria are beneficial? a) break down cellulose in some animals' digestive systems b) can survive in hot, acidic environments c) produce billions of offspring per day d) reproduce sexually through conjugation

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.