Answer:
the transfer of energy from one organism to another
Step-by-step explanation:
Food chain is a linear network that shows the transfer of energy and nutrients from one organism to another. It starts from a producer and ends with the decomposer or the highest predator and consumer in the linkage. The producer is usually a living thing whose energy comes directly from the sun. Examples are green plants and other autotrophs that make their own food.
The higher organisms in the linkage consume the lesser ones thus resulting in the transfer of energy. Consumers in the food chain consist of herbivores who are the primary consumers and carnivores who are the secondary consumers.