Class 7 Exam > Class 7 Questions > The major sources of freshwater are as follow...
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The major sources of freshwater are as follows except ________________ .
- a)Ocean
- b)Rivers
- c)Ponds
- d)Glaciers
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
The major sources of freshwater are as follows except ________________...
a) Ocean
Oceans cover about 71% of the Earth's surface and contain approximately 97% of the planet's water. However, this water is salty, with a high concentration of dissolved salts, making it unsuitable for drinking, agriculture, and most industrial uses without desalination. Therefore, oceans are not considered a source of freshwater.
b) Rivers
Rivers are significant sources of freshwater. They collect water from rainfall, melting snow, and springs, carrying it across land and into lakes, seas, or oceans. Rivers provide freshwater for drinking, irrigation, and industrial purposes and play a crucial role in the water cycle.
c) Ponds
Ponds are small bodies of still freshwater, formed naturally or artificially. They contain water that is relatively free of salt, suitable for various uses such as drinking, irrigation, and supporting aquatic life. Ponds often receive water from rain, groundwater seepage, or nearby streams.
d) Glaciers
Glaciers are massive ice formations found in polar regions and mountainous areas. They store about 69% of the world's freshwater. As glaciers slowly melt, they release freshwater into rivers and lakes, contributing to the water supply. Glacial meltwater is an important freshwater source, especially in regions dependent on seasonal melting.
In summary, while rivers, ponds, and glaciers provide freshwater, oceans do not because of their salt content.
Topic in NCERT: Water
Line in NCERT: "The major sources of fresh water are the rivers, springs, glaciers."
Community Answer
The major sources of freshwater are as follows except ________________...
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