Across
- 3. Three-atom molecule that forms a protective layer in the atmosphere
- 5. Essential for all forms of life, commonly found in oceans
- 8. Colorless gas, a major contributor to the greenhouse effect
- 10. Highly addictive alkaloid found in tobacco
Down
- 1. Alcohol used in beverages, also a fuel additive
- 2. Solvent widely used in cosmetics, paint removers, and cleaning products
- 4. Psychoactive substance that stimulates the central nervous system
- 6. Simple sugar that provides energy to the body’s cells
- 7. Organic compound found in urine, used in fertilizers
- 9. Strong-smelling compound, key ingredient in fertilizers and cleaners