A food web shows who eats who in any given habitat. Every living thing, from one-celled algae to giant blue whales, needs food to survive. Each food web is a possible pathway that energy and matter can follow through the habitat. A food web begins with producers: organisms that convert sunlight into usable chemical energy. The food web is completed by the decomposers who turn organic wastes, such as decaying plants, into inorganic materials, such as nutrient-rich soil. Decomposers complete the cycle of life, returning nutrients to the soil or oceans for use by producers. In this food web, identify the decomposer.
