Question one: how does electricity flow?

question two: what is a circuit?

The flow of electricity through a wire is actually a flow of electrons. In electrical conductors, current (flow) results from the movement of electrons from one atom to the next. Electrons are either positively or negatively charged. Negative electrons are attracted to positive electrons

a roughly circular line, route, or movement that starts and finishes at the same place

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.