6. Which of the following is an abiotic factor in the ocean? A. Nitrogen B. Coral C. Phytoplankton D. Fish

## Step 1<br />The question is asking us to identify an abiotic factor in the ocean. Abiotic factors are non-living components of an ecosystem that influence the ecosystem's structure and the organisms that live there. These factors include sunlight, temperature, wind, water, soil, and atmospheric gases.<br /><br />## Step 2<br />Looking at the options, we need to identify which one is. <br /><br />## Step 3<br />Coral, phytoplankton, and fish are all living organisms, hence they are biotic factors, not abiotic.<br /><br />## Step 4<br />Nitrogen, on the other hand, is a non-living component and is considered an abiotic factor.