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).
Report Abuse. In American usage, a billion has 9 zeroes, a trillion has 12, and the next named number, quadrillion, has 15. But in British usage, a billion has 12 zeroes, a trillion has 18, and a quadrillion has 24. Source(s): http://en.wikipedia.org/wiki/Names_of_la... DavidK93 Â· 9 years ago.