Mode of transportation is the competitor for the movement of grain coal and ore: railroads.
The means of transportation are interchangeably used with the mode of transport. The means of transportation are bus, train, airplane, ship, car, etc while the mode of transportation refers to the road, air, sea/ocean, etc. This is any of the different types of transport machines used for moving people or cargo.
There are three main types of passive transport: Simple diffusion – the movement of small or lipophilic molecules (e.g. O2, CO2, etc.) Osmosis – the movement of water molecules (dependent on solute concentrations) Facilitated diffusion – the movement of large or charged molecules via membrane proteins (e.g. ions, sucrose, etc.)
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