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 primary consumer to a decomposer? select all that apply. the arrow between the copepod and the icefish the arrow between the salps and the bacteria the arrow between the adélie penguin and the polychaete worm

Explanation:

Step1: Identify primary consumers

Primary consumers eat producers. In the food - web, copepods, salps are primary consumers as they eat producers like diatoms etc.

Step2: Identify decomposers

Bacteria are decomposers in this food - web.

Step3: Check the arrows

We need to find arrows from primary consumers to decomposers. The arrow from salps to bacteria shows matter moving from a primary consumer (salps) to a decomposer (bacteria). The arrow between copepod and icefish is from a primary consumer (copepod) to a secondary consumer (icefish), and the arrow between Adélie penguin and polychaete worm is from a secondary/tertiary consumer (Adélie penguin) to a detritivore (polychaete worm, not a typical decomposer in the strict sense here).

Answer:

the arrow between the salps and the bacteria