Which of the following determines whether or not two organisms are of the same species? (choose the best
answer)
1.If they can mate
2.If they survive using the same resources
3.If they live in the same habitat
4.If their offspring can reproduce

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.