An ecological pyramid is a graphical representation that illustrates the relationship between different trophic levels in an ecosystem. It can represent the number of organisms, biomass, or energy at each trophic level. The pyramid shape indicates that there are generally more organisms or greater ...
[42] More specifically, "habitats can be defined as regions in environmental space that are composed of multiple dimensions, each representing a biotic or abiotic environmental variable; that is, any component or characteristic of the environment related directly (e.g. forage biomass and quality) ...
The availability of today’s jobs is also tied to the use of supplemental energy. High-paying jobs such as operating a bull-dozer, producing large quantities of food on a farm using modern equipment, or operating a computer, require supplemental energy in addition to human energy. While jobs ...
There have been some high-profile failures of biomass gasification in part due to their lack of suitability for current designs. Range Fuels, besides its other failures ("you mean passing syngas over a methanol catalyst ISN'T going to make ethanol?!?!") had a lot of trouble feeding hog ...