Climate Crossword

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Across
  1. 2. Gas responsible for trapping heat in the atmosphere. (6 letters)
  2. 4. A natural process that removes CO2 from the atmosphere. (13 letters)
  3. 6. International agreement on climate change. (5 letters)
  4. 7. Renewable energy source derived from the sun. (5 letters)
Down
  1. 1. Futuristic concept for large-scale modification of Earth's climate, aimed at counteracting global warming. (14 letter)
  2. 3. An index that tracks the performance of companies leading in sustainability. (5 letters)
  3. 5. Oceanic phenomenon causing extreme weather, affected by global warming. (2 words, 4,5 letters)