During a chemical reaction, the reactants are substances initially present in a chemical reaction that are consumed to make products. if a chemical reaction requires the input of energy and the products contain higher energy levels than the initial reactants, then we can said that the reaction is a(n):

What is the ecological role of food chains and food webs

Everything that surrounds a particular organism

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.