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 copepod and the salps the arrow between the microzooplankton and the krill the arrow between the krill and the adélie penguin

Explanation:

Step1: Define primary - consumer and omnivore

A primary consumer eats producers, and an omnivore eats both plants and animals.

Step2: Analyze each option

• Copepod is a primary consumer (eats phytoplankton), and seals are omnivores (eat fish, crustaceans etc.). So the arrow from copepod to seals shows matter moving from a primary - consumer to an omnivore.
• Microzooplankton are consumers, and krill are also consumers. Krill are not omnivores in this context, so the arrow from microzooplankton to krill does not meet the criteria.
• Krill are primary consumers (eat phytoplankton), and Adelie penguins are omnivores (eat fish, krill etc.). So the arrow from krill to Adelie penguin shows matter moving from a primary - consumer to an omnivore.

Answer:

the arrow between the copepod and the seals, the arrow between the krill and the Adelie penguin