Across
- 3. are in which organisms live
- 4. largest group of organisms in which two individuals are capable of reproducing fertile offspring
- 7. a unit of heredity
- 8. a particular section, group, or the type of people or animals living in an area or country
- 9. a trace of an organism or species
Down
- 1. deoxyribonucleic acid
- 2. a scientist who studied fossils to learn about ancient organisms
- 5. study of structures of organisms
- 6. changing to survive an environment
- 9. a statement that is true and confirmed