Select a hypothesis above that would help restore equilibrium and explain your reasoning. (this is from the ecosystem stem case on gizmos)

Can someone i have no idea of how to do this.

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.

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.