Explain why, there is growing demand to ban polythene bags and plastics.

Explanation

### Step-by-Step Solution:

1. **Definition of Polythene Bags and Plastics**:
- Polythene bags and plastics are synthetic materials widely used for packaging and carrying goods.

2. **Non-biodegradable Nature**:
- These materials are classified as non-biodegradable, meaning they do not decompose naturally in the environment. Instead, they persist for many years.

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