Which is a result of a seasonal change. (Meaning a change that happens over and over at a certain time) A. Grass dying to overgrazing. B. Fish moving away from polluted site and into clearer water. C frogs digging to mud to hibernate in the winter. C. Plankton dying due to an oil spill.

What contributes to the high level of biodiversity found in wetlands? a. the large amount of available organic matter to organisms that are food for larger organisms b. the amount of available water for organism use c. the high nutrient availability d. all of the above select the best answer from the choices provided a b c d