Physics
Air moves from the region where the air ________

Humidity is high to the region where the humidity is low
Pressure is high to the region where the pressure is low
Pressure is low to the region where the pressure is high
Humidity is low to the region where the humidity is high

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Physics
An egg sinks in soft water but floats in a concentrated solution of salt because

The density of salt solution exceeds the density of eggs
Albumin dissolves in salt solution and egg becomes lighter
Egg absorbs salt from the solution and expands
Water has high surface tension

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