DDT is non-biodegradable and persistent.(T/F)

Answer

To determine whether the statement "DDT is non-biodegradable and persistent" is true or false, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding DDT**:
- DDT stands for Dichlorodiphenyltrichloroethane, which is a synthetic insecticide.
- It was widely used for pest control, especially in agriculture.

2. **Biodegradability of DDT**:
- Biodegradable substances can be broken down by microorganisms into simpler, non-toxic substances.
- DDT is classified as non-biodegradable because it does not break down easily in the environment.

3. **Persistence of DDT**:
- Persistence refers to the duration that a substance remains in the environment without breaking down.
- DDT is known to be persistent; it can remain in the soil and water for many years, accumulating in the food chain.

4. **Chemical Structure**:
- The chemical structure of DDT includes chlorinated compounds, which are known for their stability and resistance to degradation.
- The presence of chlorine atoms contributes to its non-biodegradable nature.

5. **Conclusion**:
- Since DDT is indeed non-biodegradable and persistent in the environment, the statement "DDT is non-biodegradable and persistent" is **True**.

### Final Answer:
**True**

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