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Explanation:
In the given case, most probably the top layer is of oil.
As oil is not soluble in water, it will float on the top of the water surface, in the given case it is the beaker. The oil will always float on top of the water, as it is less dense in comparison to water. The water and oil do not mix as the molecules of water are more fascinated with each other than in comparison to the molecules of oil.
As water is polar and oil is nonpolar, their molecules are not attracted to each other.
Answer:
The celestial poles are imaginary lines that trace the Earth's rotation axis in space. ... Because of this, constellations and stars close to the celestial poles, such as the Big Dipper, can be used to estimate time during the night.
Explanation: