What do you understant by biomagnification?

Explanation

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

1. **Definition of Biomagnification**: Biomagnification refers to the process by which the concentration of toxic substances increases at each successive trophic level in a food chain.

2. **Relation to Bioaccumulation**: Biomagnification is often associated with bioaccumulation, which is the accumulation of substances, such as pesticides or heavy metals, in an organism. These substances cannot be metabolized or excreted effectively.

3. **Mechanism of Biomagnification**:
- Toxic substances enter the ecosystem through various means, such as pollution.
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