Drawback of DDT as pesticide is

Options

A. It becomes ineffective after some time
B. It is less effective than others
C. It is not easily /rapidly degraded in nature
D. Its high cost

Explanation

### Step-by-Step Solution:

1. **Identify the Full Form of DDT**:
- DDT stands for dichlorodiphenyl trichloroethane. Understanding the chemical name helps in recognizing its properties and potential impacts on the environment.

2. **Discuss the Non-Biodegradability of DDT**:
- One of the major drawbacks of DDT is that it is non-biodegradable. This means that DDT does not break down easily in the environment, leading to its accumulation over time.

3. **Explain the Impact on the Food Chain**:
- DDT can enter the food chain, which is a series of organisms each dependent on the next as a source of food. When DDT is used as a pesticide, it can be absorbed by plants (producers) and then transferred to herbivores (primary consumers) and subsequently to carnivores (secondary consumers). This bioaccumulation can have harmful effects on various trophic levels.

4. **Highlight the Environmental Effects**:
- The presence of DDT in the environment can lead to detrimental effects on wildlife, particularly birds, as it can cause eggshell thinning and reproductive issues. This impacts biodiversity and ecosystem health.

5. **Conclude with the Correct Answer**:
- Based on the discussion, the main drawback of DDT as a pesticide is that it is not easily or rapidly degraded in nature, leading to long-term environmental consequences.