Moderate difficulty suitable for most players
Sustainable Earth Elements Puzzle
Moderate difficulty suitable for most players
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Across
- 2. Study of interactions among organisms and their environment
- 4. Natural energy source driving photosynthesis
Down
- 1. Layer protecting Earth from ultraviolet rays
- 3. Organic material used as renewable energy
- 5. Process of converting waste into reusable material
- 6. Ecosystem flooded with water, vital for biodiversity
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