Human studies have reported developmental effects, such as CNS dysfunction, attention deficits, and minor craniofacial and limb anomalies, in the children of pregnant women exposed to high levels of toluene or mixed solvents by inhalation.
Contrary to popular belief, the expedition DID NOT begin in St. Louis, Missouri. The first entry in the Lewis and Clark Expedition Journals state that the journey began in Pit â¦ tsburgh, PA on August 30, 1803. Lewis, who had been assigned by Jefferson sailed down the Ohio River with supplies towards St. Louis.
After spending the winter in the nearby region, Lewis and Clark started their return trip on March 23, 1806. The crew split up in early July with Clark exploring the Yellowstone River while Lewis explored a shortcut to the Great Falls on the Missouri River and also explored the Maria's River. On their westbound trip, Lewis and Clark went out of their way by following the Missouri River to its source.