Science Subtopic 2.1 ENERGY FLOW IN AN ECOSYSTEM
Producers, Consumers and Decomposers Producer Primary consumer Secondary consumer Tertiary consumer Decomposer
Food Chain & Food Web • A food chain is used to show the feeding relationship between organisms • Example: Cabbage → Snail → Bird → Fox • A food web is the interconnection between food chains.
Energy Flow in a Food Web • In the food web, energy is transferred from one organism to another organism. • Some of the energy is lost as it is used to move and carry out the life process. •Energy is also lost in the form of heat energy and chemical energy. Cabbage Grasshopper Snail Bird Energy flow Energy loss