Melting of ice caps is due to a)Depletion of ozone layer b)Global warming c)Acid rain d)eutrophication.

Options

A. Depletion of ozone layer
B. Excess CFC in atmosphere
C. Excess `CO_(2)` in the atmosphere
D. Excess water rain.

Answer

To solve the question regarding the melting of ice caps, we need to analyze the options provided:

1. **Understanding the Question**: The question asks for the cause of the melting of ice caps. Ice caps are large areas of ice that are found in polar regions and their melting can have significant environmental impacts.

2. **Evaluating the Options**:
- **a) Depletion of ozone layer**: The ozone layer protects the Earth from harmful ultraviolet (UV) radiation. While its depletion is a serious environmental issue, it does not directly cause the melting of ice caps.
- **b) Global warming**: Global warming refers to the long-term increase in Earth's average surface temperature due to human activities, primarily the emission of greenhouse gases like carbon dioxide (CO2). This increase in temperature leads to the melting of ice caps.
- **c) Acid rain**: Acid rain is caused by the release of sulfur dioxide and nitrogen oxides into the atmosphere, which can harm ecosystems but is not a direct cause of ice cap melting.
- **d) Eutrophication**: Eutrophication is the process where water bodies become overly enriched with nutrients, leading to excessive growth of algae. This phenomenon is related to water bodies and does not affect ice caps directly.

3. **Identifying the Correct Answer**: Based on the analysis, the most relevant option that explains the melting of ice caps is **b) Global warming**. The increase in global temperatures due to higher levels of greenhouse gases leads to the melting of ice caps.

4. **Conclusion**: Therefore, the correct answer to the question is **b) Global warming**.