FOOD CHAIN

FOOD CHAIN

 the sequence of transfers of matter and energy in the form of food from organism to organism. 

 Food chain 

made up of four main parts - the sun, producers, consumers, and decomposers. Producers include all green plants. They use energy from the sun to make food. Consumers do not make their own food; they eat other plants or animals.

There are five key trophic levels in an ecosystem, from simple plants that get energy from sunlight to apex predators at the top of the food chain.

Plants and Algae. Plants and algae comprise the lowest level of the trophic system. ... Primary Consumers. ... Secondary Consumers. ... Tertiary Consumers. ... Apex Predators.