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Across
  1. 3. Carbon dioxide is a by-product when this type of fungus acts on sugar to make alcohol.
  2. 5. The term for the process by which we intake oxygen and release carbon dioxide.
  3. 6. This Microsoft Billionaire called himself “an imperfect messenger on climate change," in his new book, "How to avoid a climate disaster."
Down
  1. 1. This hydrocarbon is the second most abundant greenhouse gas on Earth after carbon dioxide.
  2. 2. This South Asian country is the only carbon negative country in the world.
  3. 4. This leading economy pledged to achieve carbon neutrality by 2060.