Please help me this is grade 7 work btw​

Which of these parts of the membrane large moecules pass through it ?

Which of the following human activities resulted in the growth of the north american deer population?

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.