State the difference between the first trophic levels of detritus food chain and grazing food chain.

Explanation

To differentiate between the first trophic levels of the detritus food chain and the grazing food chain, we can follow these steps:

### Step 1: Define the Trophic Levels
- **Grazing Food Chain**: The first trophic level consists of producers, primarily green plants that perform photosynthesis to create their own food.
- **Detritus Food Chain**: The first trophic level consists of detritus, which includes dead and decaying organic matter.

### Step 2: Identify the Organisms Involved
- **Grazing Food Chain**: The organisms at the first trophic level are green plants (e.g., grass).
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