Main source of fresh water on the Earth is

Options

A. glacier
B. river-water
C. ground-water
D. ponds and tanks

Answer

To answer the question about the main source of fresh water on Earth, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Fresh Water Sources**: Begin by recognizing that fresh water is essential for life and is found in various forms on Earth, including rivers, lakes, groundwater, and glaciers.

2. **Identifying the Major Sources**: Among these sources, we need to determine which one holds the largest percentage of fresh water.

3. **Analyzing the Data**: According to scientific data, approximately 68% of the Earth's fresh water is stored in glaciers and ice caps. This is a significant portion compared to other sources.

4. **Comparing Other Sources**: While rivers, groundwater, ponds, and dams also contribute to the fresh water supply, they collectively account for a smaller percentage than glaciers and ice caps.

5. **Conclusion**: Therefore, the main source of fresh water on Earth is glaciers and ice caps.

### Final Answer:
The main source of fresh water on the Earth is glaciers and ice caps.

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