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.
A league is a distance measurement of three nautical miles. The nautical mile is the standard distance measure at sea. A mile is 5,280 feet but a nautical mile is 6,076 feet (1,852m). The difference is a result of the curvature of the earth.