Final answer:
The organism below a mouse in a food chain is usually grass.
Step-by-step explanation:
In a food chain, the organism below a mouse would be the grass.
- The primary producer in this food chain would be grass, which makes its own food through photosynthesis.
- Next in the food chain would be a primary consumer, which feeds on the grass. In this case, the primary consumer is the mouse.
- Below the mouse, we have a secondary consumer, which consumes the primary consumer. A snake can be an example of a secondary consumer in this food chain.
To summarize, the correct answer is grass as it is the organism below a mouse in a food chain.
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