1 A unit-quantity of electricity used as a measure of the amount of electrical charge that may be obtained from a storage battery before it requires recharging. 2  Ampere-Hour Capacity -- The number of ampere-hours which can be delivered by a storage battery on a single discharge.
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.
The transfer of materials and energy in the form of food from one trophic level to another trophic level by the repeated process of eating and being eaten is known as food chain. Three types of the food chain are grazing food chain, parasitic food chain, and detritus food chain. The number of food chains is interconnected to each other forming a network is called food web. Two type of food webs is terrestrial food web and aquatic food web.