Therefore, it is called a solvent, because it <span>is the one doing the dissolving.
The opposite - </span>a substance being dissolved is called a solute.
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The products of photosynthesis, oxygen and glucose, are the reactants of cellular respiration. The products of cellular respiration, carbon dioxide and water, are the reactants of photosynthesis.
The ear cavity (which is affected in infectious otitis) is connected by a duct (the Eustachian tube) to the nasopharynx located behind the nasal fossae.
Otitis is related to a bacterial or viral infection, which most often contaminating the middle ear as a result of rhino-sinusitis or rhino-pharyngitis by borrowing the Eustachian tube or vice versa (otitis media evolving towards a pharyngitis).
