PLEASE HELP SO CONFUSED WILL GIVE BRAINLESS CURRENTLY FAILING THIS THINF

Why should the united state be concerned about air pollution in china?

Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist

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.