Across
- 2. the study of genes and heredity
- 3. the study of organisms inner structures
- 5. the basic unit of heredity
- 6. the basic unit of life
- 8. the study of animals
- 9. the study of animal behavior
- 10. the study of plants
Down
- 1. the study of microorganisms
- 4. the study of human beings
- 7. the engine that propels the creation and extinction of species