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.
GRAMMAR. A relative clause is a subordinate clause that modifies a noun or a noun phrase. Example: The man who is smoking is the murderer The noun the man is modified by the relative clause who is smoking. Relative clauses give essential information to define or identify the person or thing we are talking about.