Green Plumbing

Category - Caring for Our Planet

Which of the following energy sources offers the advantage of being readily available?
  1. Geothermal
  2. Hydroelectricity
  3. Natural gas
  4. Wave/tidal
Explanation
Answer: B -Hydroelectricity is not only readily available, it is one of the renewable sources of energy. Geothermal and natural gas energy are not universally available on a global basis. Wave/tidal energy is, so far, not feasible to capture in a cost-effective manner.
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