A solar cell is used to convert ______ energy into electricity
The main energy source for operating automobiles is
Of the following, the element used to fuel nuclear power plants is
Which of the following resources is classified as a renewable energy resource?
Which of the following resources has the highest level of cost when used?
Which of the following resources has the least chance of being used 50 years from now?
Hydroelectric power is produced by
Cars of the future will have which of the following advantages?
An increase in which of the following gases in the atmosphere contributes most to global warming?
Most of Earth's freshwater is
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