Biomass contains stored energy from the sun. ... This provides a powerful incentive for creativity, energy conservation and investment, like companies can turn pollution cuts into dollars. ... The overall energy ratio (OER), the energy in the liquid fuel divided by the sum of all energy inputs to the process, is the highest for gasoline and the lowest for cellulosic ethanol. However, a large portion of the energy input for the latter is biomass, a renewable energy input. Therefore, a second energy ratio, the fossil energy ratio (FER), is more meaningful. ...

• Word Count: 1387
• Approx Pages: 6
• Grade Level: Undergraduate

In all major cities, advocates of environmental conservation annually propose plans with alternative modes of transportation and energy-efficient appliances that will every citizen would be mandated to use. ... Energy-efficient refrigerators and electric cars are available but they are different; beyond a simple trip to an appliance store or the car dealer, there are more steps involved in acquiring one. In our consumer-driven society, it has become acceptable to waste; waste energy, waste water, waste time. ...

• Word Count: 1159
• Approx Pages: 5
• Grade Level: Undergraduate

Greenhouse gases like carbon dioxide (CO2) and methane (CH4) absorb a part of this heat energy and radiate it back to the surface of the planet, trapping it in the lower atmosphere (troposphere). ... Deforestation is in part the result of population expansion in the tropics and the use of land for agriculture and wood for energy. ...

• Word Count: 2775
• Approx Pages: 11
• Grade Level: Undergraduate

[The end result being]...the transition to renewable energy sources, and the research and development of alternatives to CFCs" (Rifkin 318). ... This notion of a more sustainable economy can be achieved the following ways: conservation of resources, slow down material production, and lower industrial output. ...

• Word Count: 3320
• Approx Pages: 13
• Grade Level: High School

[The end result being]...the transition to renewable energy sources, and the research and development of alternatives to CFCs" (Rifkin 318). ... This notion of a more sustainable economy can be achieved the following ways: conservation of resources, slow down material production, and lower industrial output. ...

• Word Count: 3320
• Approx Pages: 13
• Grade Level: High School