Across
- 5. First antibiotic discovered by Alexander Fleming
- 7. Instrument to view small objects or organisms
- 8. Emission of radiation from atomic nuclei
- 10. Rigid layer of Earth's lithosphere
- 12. Preparation to stimulate immunity against diseases
- 14. Process of gradual change in species over time
- 16. Naturalist who proposed the theory of evolution
- 17. Basic unit of life
- 19. Substances that inhibit the growth of bacteria
- 20. Molecule carrying genetic information
Down
- 1. Study of heredity and variation in organisms
- 2. Relating to the force of attraction between objects
- 3. Act of finding or uncovering something
- 4. Theory of space, time, and gravity
- 6. Relating to the smallest unit of matter
- 9. Process of administering a vaccine
- 11. Flow of electric charge
- 13. Relating to atomic nuclei or nuclear energy
- 15. Force that attracts objects toward each other
- 18. Physicist known for the theory of relativity