Question

this food web is from an ocean ecosystem in the ross sea, off the coast of antarctica. which arrows show matter moving from a tertiary consumer to a decomposer? select all that apply. the arrow between the silverfish and the icefish the arrow between the emperor penguin and the polychaete worm the arrow between the crabeater seal and the polychaete worm

Explanation:

Step1: Identify tertiary consumers

Tertiary consumers eat secondary consumers. In this food - web, crabeater seal, emperor penguin can be tertiary consumers.

Step2: Identify decomposers

Decomposers break down dead organisms. Polychaete worm is a decomposer here.

Step3: Check the arrows

We need to find arrows from tertiary consumers to decomposers. The arrow from emperor penguin to polychaete worm and from crabeater seal to polychaete worm show matter moving from a tertiary consumer to a decomposer. The arrow between silverfish and icefish is between consumers and not from a tertiary consumer to a decomposer.

Answer:

the arrow between the emperor penguin and the polychaete worm, the arrow between the crabeater seal and the polychaete worm