From 2 to 3 Years. Parents often see huge gains in their child's speech. Your toddler's vocabulary should increase (to too many words to count) and he or she should routinely combine three or more words into sentences.
Micrographs of osmotic pressure on red blood cells. Tonicity is a measure of the effective osmotic pressure gradient (as defined by the water potential of the two solutions) of two solutions separated by a semipermeable membrane.In other words, tonicity is the relative concentration of solutions that determine the direction and extent of diffusion.nlike osmotic pressure, tonicity is influenced only by solutes that cannot cross the membrane, as only these exert an effective osmotic pressure. Solutes able to freely cross the membrane do not affect tonicity because they will always be in equal concentrations on both sides of the membrane.
In music, the subdominant is the technical name for the fourth tonal degree of the diatonic scale. It is so called because it is the same distance  below  the tonic as the dominant is above the tonic-in other words, the tonic is the dominant of the subdominant. It also happens to be the note immediately below the dominant. It is sung as fa in solfege.