Answer:
the arrow going from the orca to the sea cucumber
Explanation:
An orca is a tertiary consumer (at the very top of the food chain, not many animals eat orcas and orcas eat almost any animal) while the sea cucumber is a decomposer (they are at the very bottom of the food chain. they eat things like plankton, pieces of animal waste on the sea floor, etc. but they dont eat any consumers.) i hope this helped! have an amazing day (: