Question

this food web is from an ocean ecosystem in the ross sea, off the coast of antarctica. which organisms are both secondary consumers and omnivores in this food web? select all that apply. copepod crabeater seal krill

Explanation:

Step1: Define secondary consumers and omnivores

Secondary consumers eat primary - consumers. Omnivores eat both plants and animals.

Step2: Analyze copepod

Copepod feeds on microzooplankton (primary - consumer) and diatoms (plant - like), so it is a secondary consumer and an omnivore.

Step3: Analyze crabeater seal

Crabeater seal eats krill (primary - consumer) and may also consume other small organisms. Krill eat phytoplankton (plants), so crabeater seal is a secondary consumer and an omnivore.

Step4: Analyze krill

Krill feeds on diatoms (plants) and also on bacteria. They are eaten by higher - level consumers. Krill are secondary consumers and omnivores.

Answer:

copepod, crabeater seal, krill