Speech Difficulties in Down Syndrome. Down syndrome (DS) is an incurable genetic disorder that has a profound impact upon a personâs physical, mental, and social development. Children with DS have anatomical and physiological differences in the mouth and throat region that affect feeding, swallowing, and oral motor skills.
1 A gross refers to a group of 144 items (a dozen dozen or a square dozen).  A great gross refers to a group of 1728 items (a dozen gross or a cubic dozen).
How many items of numbering expressions are in 1 gross? The answer is: The change of 1 gr, gro - 144 ( gross ) unit of numbering expressions measure equals = to 144.00 base-unit-1 ( item ) as the equivalent measure for the same numbering expressions type.