Identify the correct sequence of freshwate abundance on the Earth.(GP = Glaciers and Polar ice; A = Atmosphere; LR = Lakes and Rivers; UW = Underground Water)
Freshwater Abundance Sequence on Earth
The Earth's freshwater is distributed unevenly across various reservoirs. Understanding the relative proportions is key to identifying the correct abundance sequence.
Distribution of Freshwater Reservoirs
The major freshwater reservoirs and their approximate percentages are:
| Reservoir Category | Abbreviation | Approximate Percentage of Freshwater |
|---|---|---|
| Glaciers and Polar Ice | GP | $68.7\%$ |
| Underground Water | UW | $30.1\%$ |
| Lakes and Rivers | LR | $1.26\%$ |
| Atmosphere | A | $0.04\%$ |
Determining the Correct Sequence
Comparing the percentages, the order from most abundant to least abundant freshwater is:
- Glaciers and Polar ice (GP) > Underground Water (UW) > Lakes and Rivers (LR) > Atmosphere (A)
This sequence corresponds to the largest portions of freshwater being locked in ice, followed by groundwater, then surface water bodies like lakes and rivers, and finally the small amount present in the atmosphere.
Matching with Options
The established sequence GP > UW > LR > A matches Option D.
Important Questions from Hydrology And Water Resources
- A river with $2\text{ km}$ wide flood plain and $10\text{ m}$ channel depth flows with a velocity of $2\text{ ms}^{-1}$. What will be flow condition in the river?
Read the following statements and choose the CORRECT answer.
I. The suspended sediment concentration in rivers is supply-limited rather than hydraulically-limited, when
II. Much suspended material is contributed by overland flow from hillslope erosion
III. Suspended material is entirely derived by turbulent diffusion from the channel bed
- With reference to water in the hydrologic cycle, its residence time is the maximum in
Match the basin types A, B and C with the hydrograph patterns P, Q and R
Basin types Hydrograph pattern A. 
P. 
B. 
Q. 
C. 
R. 
Hydraulic gradient beneath A and B during rainy and dry seasons will
