Across
- 2. When the gases in our atmosphere prevent heat from escaping the planet, what is it called?
- 4. Which land-based ecosystem holds the most biodiversity, i.e. concentration of plants and animals?
- 5. What substance is released into the atmosphere when solid waste, fossil fuels and wood products are
- 6. What region on Earth produces 20% of the planet's oxygen?
- 8. Most of Earth's breathable air comes from where?
- 10. The melting of the Greenland ice sheet poses an immediate threat to the survival of which animal?
Down
- 1. What form of plastic pollution is most common in the world today?
- 3. What are the three “R’s” of waste management?
- 7. What is the theme of Earth Day 2024?
- 9. Which of the following is NOT a renewable resource?