According to this section\'s materials, what is thepotential for growth in outpu

Question

According to this section's materials, what is thepotential for growth in output for each of these renewable electricity sources? Hydroelectric electric power A (HG) - This is already contributing some renewable electricity and other direct energy (heat), and has some potential for growth in the amount of electrical output, but only in certain specific geographical locations. Biomass electric power from burning wood, trash, and agricultural waste Geothermal electric power Ocean thermal electric power Tidal energy electric power B(NT)- Is not yet contributing any significant electric power, but has the potential to produce some electricity, but only in a few dozer geographical locations around the world c'LS) . This has been the largest renewal electricity contributor for many years, but has only limited potential for a significant amount of additional new U.S. electrical output without causing significant environmental damage during new construction. (NEQ) Is not yet contributing any significant electric power, but has the potential to produce huge amounts of electricity in many areas of equatorial regions, which excludes the U.S. E. (IA) This has the potential to increase output without adding additional carbon to the carbon cycle, but it would also result in an increase in the amount of air pollution emitted while operating.

Explanation / Answer

Hydroelectric power - C. (LS) This has been the largest renewal electricity contributor for many years but has only limited potential for a significant amount of additional new U.S. electrical output without causing significant environmental damage during new construction. (Reason: Requires the construction af a dam.Hydroelectric stations exist in at least 34 US states and the largest concentration of hydroelectric generation in the US is in the Columbia River basin)

Biomass electric power from burning wood, trash and agricultural wastes - E. (IA) This has the potential to increase output without adding additional carbon to the carbon cycle, but it would also result in an increase in the amount of air pollution emitted while operating. (Reason: Burning of wood and trash will increase the amount of air pollution)

Geothermal electric power - A. (HG) This is already contributing some renewable electricity and other direct energy(heat), and has some potential for growth in the amount of electrical output, but only in certain specific geographical locations. (Reason: Generation of geothermal energy is limited to areas near tectonic plate boundariesso can be generated in selected areas only)

Ocean thermal electric power - D (NEQ) is not yet contributing any significant electric power, but has the potential to produce huge amounts of electricity in many areas of equatorial regions, which excludes the U.S. (Reason: It is generated by using the temperature difference that exists between the warm tropical waters at the sun warmed surface and cold water drawn from depths of around 6000m, so the equatorial regions would be the exact locations due to the high temperature of the water and the equator lies within the Tropical zone)

Tidal energy electric power - B (NT) is not yet contributing any significant electric power, but has the potential to produce some electricity, but only in a few dozen geographical locations around the world. (Reason: Tidal energy can be generated only in the coastal areas and thus there is a limited availability of proper sites with sufficiently high tidal ranges or flow velocities that is capable of generating electricity. So tidal energy can only be generated in a few geographical locations around the world which are located along the coastlines.)

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