Which of the following best defines the word aquifer? select one: a. a place where water comes to the surface b. a place where water evaporates c. a layer of rock or soil that holds water underground d. thick surface of clay that prevents water from moving downward in the ground

Me with biology endocrine system crossword also image left i need with hw

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?

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.