Question

the food web represents the flow of energy in a marine ecosystem. how many organisms shown in the food web receive energy only from producers?

Explanation:

Step1: Identify producers

Producers in the food - web are phytoplankton and seaweed.

Step2: Check organisms that get energy only from producers

Zooplankton eats phytoplankton and crabs eat seaweed. These are the only organisms that receive energy only from producers.

Answer:

2