Provide your best answer for the following question. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The question is: Organisms can be classified according to the flow of energy in a food chain. Which is the correct order of the flow of energy?
Producers → Primary Consumers → Secondary Consumers → Tertiary Consumers → Decomposers.