A, B, C and D are four layers of atmosphere A helps in long distance radio communications. In layer B most of weather phenomena take place. The pollutants relesed from air coonditioners and aerosols deplete layer 'D' which also gets depleted by nitrous oxide. Meteorites burn up in layer C.
Identify the layers A, B, C and D, arrange them in increasing order of hight from the surface of earth.

Explanation

To solve the question about the layers of the atmosphere A, B, C, and D, we need to identify each layer based on the characteristics provided and arrange them in increasing order of height from the surface of the Earth.

### Step-by-Step Solution:

1. **Identify Layer A**:
- The question states that "A helps in long distance radio communications." This characteristic is associated with the **ionosphere** (also referred to as the thermosphere).
- **Conclusion**: Layer A = Ionosphere.

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