The buoyant force is a force which produces and upward pressure on a fully submerged or partially submerged object o the surface of water to make it float.
<h3>Floating</h3>
Floating means staying on the surface of water without getting drowned in the water due to the differences in forces from both the sides of the surface of water.
The lower the mass the higher the buoyant force applied on the object for its floatation. The water with low mass results in higher upward pressure that will help a person to float on the surface of the water easily.
Therefore it can be said that the water having a characteristic as lower mass will help the person to float easily on the surface of water.
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Pratt's hypothesis of isostasy proposed that topography is produced by crustal blocks with varying densities, that terminate at a uniform depth.
<h3>Theories of isostasy</h3>
The Pratt hypothesis, developed by John Henry Pratt, an English mathematician, and an Anglican missionary, supposes that Earth's crust has a uniform thickness below sea level with its base everywhere supporting an equal weight per unit area at a depth of compensation.
<h3>
Pratt model </h3>
A model for the lithosphere that accounts for isostatic anomalies by assuming there is a level of compensation that lies at a constant depth everywhere. Below the level of compensation, all rocks have the same density, but above it, density decreases as topographic elevation increases.
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Answer:
Stream pools serve as a habitat for organisms that have difficulty in feeding or finding swifter areas of the stream.
Explanation:
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