A: Bacteria obtain energy by either ingesting other organisms and organic compounds or by producing their own food. The bacteria that produce their own food are called autotrophs. Bacteria that must consume other organic molecules for energy are called heterotrophs.
Nautical Mile vs. Mile. While mile is a unit of distance on land, a nautical mile is used to measure distances at sea. 1 nautical mile = 1.151 mi. Kilometer vs Mile.
Distance and Speed. The nautical mile is the unit of distance used at sea and defined as [ one minute (1') of latitude ] . Because the earth is not a perfect sphere, the actual length of a nautical mile varies. It is longer at the poles and shorter at the equator but standardized to 1852m or 6076ft.