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 an omnivore? select all that apply. the arrow between the microzooplankton and the krill the arrow between the microzooplankton and the copepod the arrow between the diatom and the microzooplankton

Explanation:

Step1: Identify primary consumers

Primary consumers eat producers. In this food - web, microzooplankton and copepod are primary consumers as they eat diatoms (producers). Krill is also a primary consumer as it eats diatoms and ice - algae.

Step2: Identify omnivores

Omnivores eat both plants and animals. Krill and copepod can be considered as they consume both producers (diatoms etc.) and other small organisms.

Step3: Check the arrows

The arrow between microzooplankton and krill shows matter moving from a primary consumer (microzooplankton) to an omnivore (krill). The arrow between microzooplankton and copepod shows matter moving from a primary consumer (microzooplankton) to an omnivore (copepod). The arrow between diatom and microzooplankton is from a producer (diatom) to a primary consumer (microzooplankton), so it does not meet the criteria.

Answer:

the arrow between the microzooplankton and the krill
the arrow between the microzooplankton and the copepod