|
Author Question: Until the 1830s, which of the following was not a principal reason for traveling by water? (Read 429 times) |
Did you know?
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Did you know?
The FDA recognizes 118 routes of administration.
Did you know?
The average office desk has 400 times more bacteria on it than a toilet.
Did you know?
The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").
Did you know?
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.