1. what is a marine food web?\n2. name one example of a primary producer in a marine ecosystem.\n3. who are…

Brief Explanations:

1. A marine food web is a complex network of feeding relationships among organisms in the ocean, showing who eats whom.
2. Phytoplankton are common primary producers in marine ecosystems, using photosynthesis to make food.
3. Zooplankton are primary consumers in a marine food web, feeding on primary producers like phytoplankton.
4. Decomposers in the marine food web break down dead organisms and waste, recycling nutrients back into the ecosystem.
5. Primary consumers eat primary producers, forming the second - trophic level and transferring energy.
6. The energy captured by primary producers is used for their own life processes, and some is passed on to primary consumers when they are eaten.
7. A small fish like a herring can be a secondary consumer, feeding on zooplankton.
8. A trophic level is a position an organism occupies in a food chain or food web based on its feeding behavior.
9. Top predators in marine food webs help control the populations of lower - trophic level organisms, maintaining balance in the ecosystem.
10. Pollution can harm or kill organisms at different trophic levels in marine food webs, disrupt food chain relationships, and accumulate in organisms through biomagnification.

Answer:

1. A complex network of feeding relationships among ocean organisms showing who eats whom.
2. Phytoplankton.
3. Zooplankton.
4. Break down dead organisms and waste, recycling nutrients.
5. Primary consumers eat primary producers, transferring energy.
6. Used for primary producers' life processes and passed on to primary consumers.
7. Herring.
8. A position an organism occupies in a food chain/web based on feeding behavior.
9. Help control populations of lower - trophic level organisms, maintaining ecosystem balance.
10. Harm/kill organisms, disrupt food chain relationships, and cause biomagnification.