Discuss the most important sources of renewable energy and their potential drawbacks and benefits
What will be an ideal response?
Hydroelectric is the largest source of renewable energy but most of the ideal locations have already been developed. Geothermal, tidal currents and biofuels are all potential renewable energy sources, but solar and wind power are technically mature and likely to see high rates of growth. Iceland is able to use hydroelectric and geothermal energy to meet 95% of its electrical power needs. Germany has invested heavily in solar energy and wind energy. Problems include the potential for power surges on particularly sunny and windy days. Most facilities must have a back up power source for times when it is not windy nor sunny. There may be considerable cost in upgrading existing power grids to handle these energy fluctuations. In addition, government subsidies for fossil fuels have traditionally made these much less expensive than renewable sources.
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Muscles are connected to bones via
A. motor neurons. B. tendons. C. acetylcholine. D. joints.
The Queenston Delta formed in response to the:a
erosion of the Taconic Highlands. b. subduction of the Iapetus plate. c. uplift of the Caledonides. d. carbonate deposition. e. Mississippi River
Widespread husbandry of pigs would be an ecological disaster in Islam's hearth because
A) no one would buy them because of the religious taboos. B) they can only be raised in the wet winter months. C) pigs would compete with humans for food and water without offering compensating benefits. D) they would be outcompeted by oil production. E) pigs represent a sacred animal.
Because of the dominance of physical weathering, which is comparatively slow, slopes in arid environments tend to be bare and angular
a. True b. False Indicate whether the statement is true or false