What are tropic levels ? Give an example of a food chain and state the different trophic levels in it.

Explanation

**Step-by-Step Text Solution:**

1. **Definition of Trophic Levels:**
Trophic levels refer to the different levels or steps in a food chain. Each level represents a different stage in the flow of energy and nutrients through an ecosystem, where one organism eats another.

2. **Understanding Food Chains:**
A food chain illustrates how energy and nutrients move from one organism to another. It typically starts with producers (autotrophs) and moves up to various levels of consumers.

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