– Systems like geoenergy must manage environmental risks such as radon gas.
The passage usually highlights a specific moment when technology caught up with ambition. Look for transition words like however, recently, or breakthrough . renewable energy dreams become reality ielts reading answers
While renewable energy reduces pollution, the text highlights that new technologies must still be carefully designed to avoid causing their own environmental harm (e.g., managing Radon gas in geothermal, as noted by Dr. Prue Chopra IELTS Reading Answers: "Renewable Energy" (Case Study) – Systems like geoenergy must manage environmental risks
Explanation: Paragraph C states that Lithium-ion is used for "short-term storage," whereas Hydrogen is being touted for "long-duration storage" (weeks or months). managing Radon gas in geothermal