Across
- 2. - Type of renewable energy harnessed directly from the sun
- 4. - Colour symbolising nature and sustainability
- 6. - _____ fuels: coal, oil, and gas that emit carbon when burned
Down
- 1. - Organic matter decomposed and used as natural fertiliser
- 3. - Protective atmospheric layer that shields Earth from UV radiation
- 5. - Process of converting waste into reusable material