Research the practicality of using the atmosphere, oceans, and ice sheets as
sources of freshwater. Are any of these reservoirs currently in use? If so, by
whom? If not, why do you think they are not used? Ice sheets What will be an ideal response?
Answers will vary. It is unknown if the ice sheets are being used as a drinking water
source at this time. The relative inaccessibility of the water in the ice is the main reason
why this source is not being used.
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Of the following G20 countries, the country least dependent on renewable energy is
A) the Unites States. B) Spain. C) Portugal. D) Iceland. E) New Zealand.
What atmospheric layer is the home of weather, has the greatest density of gas molecules, and has a decrease in temperature with height?
A) Thermosphere
B) Mesosphere
C) Stratosphere
D) Troposphere
Which of the following is not a major challenge to the widespread use of renewable energy?
A) There are many concerns about the environmental risks associated with these technologies. B) There are uncertainties and risk associated with investing in new technologies. C) Government subsidies for fossil fuels reduce incentives for the use of renewable energy. D) Consumers often have limited knowledge about the source of their electricity. E) The cost of production of these new technologies is high.
During the 19th century, as populations grew and urban environments expanded, humans had less exposure to ________
A) water B) chemicals C) animals D) natural environments E) air pollutants