Multiple choice general knowledge science & technology

Billions of tons of what compound are stored in Earth's permaafrost?

  1. Oxygen

  2. Ozone

  3. Gold

  4. Carbondioxide
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Permafrost contains frozen organic matter that has accumulated over thousands of years, storing billions of tons of carbon and methane. As permafrost melts due to climate change, these stored greenhouse gases are released into the atmosphere, creating a dangerous feedback loop.

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