Depletion of ozone layer causes

Options

A. Increased transpiration
B. Damages paints and fibres
C. Causes aging of skin
D. All of these

Answer

### Step-by-Step Solution

1. **Understanding the Ozone Layer**:
- The ozone layer is a protective layer in the Earth's stratosphere that absorbs the majority of the sun's harmful ultraviolet (UV) radiation.

2. **Causes of Ozone Layer Depletion**:
- The depletion of the ozone layer is primarily caused by substances such as chlorofluorocarbons (CFCs) and nitric oxide. These chemicals break down ozone molecules, leading to a thinner ozone layer.

3. **Effects of Ozone Layer Depletion**:
- When the ozone layer is depleted, more UV radiation reaches the Earth's surface. This increase in UV radiation can have several harmful effects:
- **Health Risks**: Increased exposure to UV radiation can lead to skin cancer and other health issues, such as cataracts and damage to the eyes.
- **Impact on Plants**: UV radiation can adversely affect plant proteins and reduce chlorophyll production, which is essential for photosynthesis.
- **Climate Effects**: Increased UV radiation can disrupt the heat balance in the Earth's atmosphere, affecting climate patterns.
- **Ecological Impact**: The overall ecological system can be disturbed, affecting both humans and animals.

4. **Identifying Incorrect Options**:
- In the context of the question, we need to identify which of the provided options are consequences of ozone layer depletion:
- **Increased Transpiration**: This is not a direct consequence of ozone layer depletion. Transpiration is related to water movement in plants and is not significantly affected by UV radiation.
- **Aging of the Skin**: This is a correct consequence, as increased UV exposure can lead to skin damage and aging.
- **All of These**: This option is incorrect as not all listed effects are true consequences of ozone depletion.

5. **Conclusion**:
- The correct answer to the question "Depletion of ozone layer causes" is that it leads to the aging of the skin due to increased UV radiation exposure.