By raising and lowering the water level - apex :D
Birmingham has more miles of canals than Venice.
Canals changed the industry because they allowed more goods to be transported across the country more easily.
Better roads and canals meant that goods could be transported more easily and quicker.
Chemical stains make light microscopes more useful by showing specific structures in a cell.
Chemical stains make light microscopes more useful by showing specific structures in a cell.
Locks and dams were the structures that were built at the beginning of 1885 in the Ohio River to make it more navigable.
The webstore Gun Vault specializes in gun safes and locks. These specialty locks and safes are often secured with biometric measures to make them more secure.
keeps them up.
Most useful and more useful.
more useful, the most useful
Perennial canals are those canals that have water either from rivers or from artificial lakes.Read more: What_are_perennial_canals
Sounds like your referring to locks being keyed alike meaning the 1 key works in more then 1 lock? Hope this helps