The earth day

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Across
  1. 3. How many deaths per year does the World Health Organization attribute to climate change?
  2. 8. How far is the Earth from the Sun?
  3. 9. since what day is it celebrated?
  4. 13. What proportion of the Earth's surface is currently covered with trees?
  5. 17. Awareness about the challenges to preserve planet Earth is the ...
  6. 18. What is one of the main factors of environmental deterioration?
  7. 19. After carbon dioxide and methane, what is the gas that contributes the most to the greenhouse effect?
  8. 20. who was your main promoter?
Down
  1. 1. What is the mean radius of the Earth?
  2. 2. how many tigers are left in the wild in the world?
  3. 4. what month is it?
  4. 5. About how many million years ago did the Earth originate?
  5. 6. What percentage of fresh water on the planet is in the form of ice?
  6. 7. changes in biodiversity affect the functioning of ...
  7. 10. what day is it ?
  8. 11. What is the proportion of water that the planet has?
  9. 12. What is the country that emits the most greenhouse gases?
  10. 14. Do you know what is the highest point on Earth?
  11. 15. day what is the complete name ?
  12. 16. And in Latin America, who tops the list of the countries with the most emissions?