1. Coal
  2. Geothermal energy
  3. Natural Gas
  4. Petroleum
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1 Answers

Answer: Option 2

Fossil fuels — coal, petroleum, and natural gas — are the primary culprit behind climate change. They contribute more than 80 percent of greenhouse gas emissions — and 98 percent of CO2 emissions alone. On the contrary, Geothermal energy is thermal energy generated and stored in the Earth. It is clean and sustainable.

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