Physics
When a bottle of scent is kept open in a corner of a room its odour is felt in all parts of the room. This is due to the phenomenon of :

Sublimation
Vaporisation
Evaporation
Diffusion

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Physics
The blue colour of water in the sea is due to

Scattering of blue light by water molecules
Absorption of other colours except blue by water molecules
Reflection of blue sky by sea water
Reflection of blue light by impurities in sea water

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