As the electrons flow through the cell ... and efficient coordination with energy companies, solar electricity can often pay for itself in five to ten years.

A major focus of the IBP was to quantify energy flow through trophic levels in various ... That is, population production by itself (without respiration, assimilation, etc.) became used as a ...

The way energy passes through an ecosystem is described as energy flow. Herbivores (plant eating animals) are primary consumers. Carnivores (animals who eat other animals) are secondary consumers ...