Earth Day

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Across
  1. 2. Who is the founder of the Earth Day?
  2. 3. When the gases in our atmosphere prevent heat from escaping the planet, what is it called?
  3. 6. What are the three “R’s” of waste management?
  4. 7. Which land-based ecosystem holds the most biodiversity, i.e. concentration of plants and animals?
  5. 9. The melting of the Greenland ice sheet poses an immediate threat to the survival of which animal?
  6. 10. What region on Earth produces 20% of the planet's oxygen?
Down
  1. 1. What substance is released into the atmosphere when solid waste, fossil fuels and wood products are
  2. 4. Most of Earth's breathable air comes from where?
  3. 5. What form of plastic pollution is most common in the world today?
  4. 8. What is the theme of Earth Day 2024?