A diagram that shows the transfer of energy from one organism to another (who is eaten by what).

The diagram that shows the transfer of energy from one organism to another (who is eaten by what) is called a Food Chain. Here are the steps to create a simple food chain:

1. Identify the Producer: Start by identifying the producer in the ecosystem. Producers are usually plants or algae that produce their own food through photosynthesis.

2. Identify the Primary Consumer: The next step is to identify the primary consumer. This is an organism that eats the producer. For example, in a grassland ecosystem, the grass is the producer and a grasshopper that eats the grass is the primary consumer.

3. Identify the Secondary Consumer: The secondary consumer is the organism that eats the primary consumer. In our example, this could be a frog that eats the grasshopper.

4. Identify the Tertiary Consumer: The tertiary consumer is the organism that eats the secondary consumer. In our example, this could be a snake that eats the frog.

5. Identify the Quaternary Consumer: The quaternary consumer is the organism that eats the tertiary consumer. In our example, this could be a hawk that eats the snake.

6. Draw the Food Chain: Now that you have identified the organisms in the food chain, you can draw it. Start with the producer at the bottom, then draw arrows pointing upwards to each consumer in the order they are eaten.

Remember, the arrows in a food chain represent the direction of energy flow, from the organism being eaten to the one doing the eating.