The rate of mass loss in the first 30 minutes was 7 milligrams per gram of leaf per minute. Calculate the rate of mass loss between 30 minutes and 180 minutes. GIVE ONLY THE NUMERICAL ANSWER TO 2 DECIMAL PLACES

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.