Question

6 in the marine food web, which two organisms are primary consumers? a zooplankton b krill c killer whale d cod

Explanation:

Primary consumers eat primary producers. Zooplankton and krill feed on phytoplankton (primary producers) in the marine food - web. Killer whales are tertiary or quaternary consumers and cod are secondary consumers.

Answer:

A. zooplankton, B. krill