Across
- 2. WARMING Increase in Earth’s average temperature
- 4. Renewable energy from the sun
- 5. Also known as “laughing gas”
- 6. Non-environmentally friendly energy source
- 7. Gas produced by livestock and rice fields
- 8. Ozone-depleting compound
- 9. Layer of gases surrounding Earth
Down
- 1. process of taking in energy(heat)
- 2. Process where heat is trapped in the atmosphere
- 3. Main greenhouse gas from burning fossil fuels