Depletion of ozone layer can not cause

Options

A. Damage of DNA
B. Skin cancer
C. Cataract
D. Rickets

Answer

To solve the question regarding what the depletion of the ozone layer cannot cause, we will analyze each option provided.

### Step-by-Step Solution:

1. **Understand Ozone Layer Depletion**:
- The ozone layer protects the Earth from harmful ultraviolet (UV) radiation from the sun. When this layer is depleted, more UV rays reach the Earth's surface.

2. **Analyze Each Option**:
- **Option 1: Damage of DNA**:
- UV rays, particularly UVB rays, can cause damage to DNA. This is a well-documented effect of increased UV radiation due to ozone layer depletion. Therefore, this option can be caused by ozone depletion.

- **Option 2: Skin Cancer**:
- Increased exposure to UV radiation is a significant risk factor for skin cancer. Hence, ozone layer depletion can indeed lead to skin cancer. This option can also be caused by ozone depletion.

- **Option 3: Cataract**:
- UV radiation can lead to cataracts, which are clouding of the lens in the eye. This condition is associated with increased UV exposure, making this option also a consequence of ozone depletion.

- **Option 4: Rickets**:
- Rickets is a disease caused by a deficiency of vitamin D, which is essential for bone health. Vitamin D is synthesized in the skin through exposure to UVB rays. Since the depletion of the ozone layer allows more UVB rays to reach the Earth, it would not cause a deficiency in vitamin D. Therefore, ozone layer depletion cannot cause rickets.

3. **Conclusion**:
- After analyzing all the options, we find that the depletion of the ozone layer cannot cause **Rickets**. Thus, the correct answer is **Option 4: Rickets**.

### Final Answer:
The depletion of the ozone layer cannot cause **Rickets**.

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