Across
- 3. Invisible gas formed when water evaporates.
- 7. Gas plants use for photosynthesis.
- 10. The lightest element, a component of water.
Down
- 1. A potent greenhouse gas often found in swamps.
- 2. Gas vital for human breathing.
- 4. A noble gas commonly used in light bulbs.
- 5. Most abundant gas in Earth's atmosphere.
- 6. An inert gas used to fill balloons.
- 8. Pungent gas found in cleaning products and urine.
- 9. A protective layer in the atmosphere blocking UV rays.