The Ten Percent Law refers to the transfer of energy from one trophic level to another.
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* low fat * high protein * complex carbohydrates * provides a variety of vitamins and minerals * low sodium content * low calorie * provides energy
A system that is 35 percent efficient converts 35 percent of the input energy into useful work or output, while the remaining 65 percent is lost, often as waste heat or through other inefficiencies. For instance, in an engine, if it burns fuel to produce power, a 35 percent efficiency means that only 35 percent of the fuel's energy is effectively used for propulsion, with the rest wasted. This efficiency rating helps gauge performance and indicates potential areas for improvement.
biomass
Biomass
fossil fuels
Coal provides about 40 percent of the world's energy supply. It is a major source of electricity generation in many countries, especially in Asia. However, coal is also a significant contributor to greenhouse gas emissions and air pollution.
Industrialized nations have the greatest energy needs. However, non-industrialized nations aspire to become industrialized, so in that sense everybody has comparable energy needs, it's just that not everybody has obtained the energy that they need or the means to make use of it.
It provides about 19 percent of US electricity and about 16 percent world-wide
15 grams of Nitrogen are contained in a 2500 kcalorie diet that provides 15 percent of the energy as a protein.
fossil fuels
natural gas
Nuclear power provides about 10% of the world's electricity. In countries like France and the United States, nuclear power plays a significant role in the energy mix and provides a substantial portion of their electricity needs.
Industrialised countries use more fossil fuels (coal, oil and natural gas)Industrialised countries release more carbon dioxide (greenhouse gas)Industrialised countries are more responsible for global warming and climate change.
High energy use Complex industrialized bases Low population growth High per capita incomes