9-3 Abiotic vs. Biotic Factors in Freshwater Ecosystems 9-4 Adaptations to Abiotic Factors in Marine Ecosystems pp. 524-533 Freshwater Ecosystem Abiotic Factors pp. 536-545 Biotic Factors Explain what organisms have had to do to adapt to abiotic factors in each of the following marine ecosystems Coastal Ocean Still Water Changing Water Levels Open Ocean Moving Water Deep Ocean Estuary Example of interactions between: An Abiotic & Biotic Factor 2 Biotic Factors Create a Food Web from organisms in a marine ecosystem.