There are two types of solar energy systems; solar thermal and photovoltaic. ... Solar energy systems are sustainable because they create no pollution and consume natural energy, unlike the fossil fuels used now to produce electricity and heat. ... The overall energy crisis includes the types of fossil fuels used, the methods of creating energy, disposing of post energy waste, and the magnitude of the national population which demands such vast quantities of energy. ... " Shuster uses this information to support his argument that with a constantly increasing national population, energy d...

• Word Count: 3481
• Approx Pages: 14
• Has Bibliography
• Grade Level: Undergraduate

Several factors can affect the emissions per person in a state, for example, the types of fuel used to generate electricity, population and vehicle miles traveled ,and whether fossil fuels are extracted or processed within the state. ... The other 68% of emissions are affected more by the types of industries in the U.S., the types of offices we use, how our food is grown, and other factors. ... Many of these places depend on a delicate balance of rainfall, temperature, and soil type. ... Indirectly, ecological disturbances, air pollution, changes in food and water supplies, and coastal floo...

• Word Count: 3240
• Approx Pages: 13
• Grade Level: Undergraduate