•Interaction of Organisms: Predators, parasites, competition and cooperation.
Energy and Nutrients:1.Producers (plants) obtain energy from sunlight,
water and nitrates from soil.2.Consumers (animals) eat plants or other animals; provided nitrates and CO2to be used by
plants.3.Decomposers (bacteria, fungi) break down dead organisms into
•Ecological Succession: Drastic events, like fire, bring a series
of changes to an