Across
- 3. time scale The standard method used to divide Earth’s long natural history into manageable parts.
- 5. selection The human practice of breeding animals or plants that have certain desired traits.
- 7. The trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock.
- 9. selection The process by which individuals that are better adapted to their environment survive and reproduce more successfully than less well adapted individuals do.
- 10. A characteristic that improves an individuals ability to survive and reproduce in a particular enviroment.
Down
- 1. The process in which inherited characteristics within a population change over generations such that new species sometimes arise.
- 2. The death of every member of a species.
- 4. The occurrence of heredity or non heredity differences between different individuals of a population.
- 6. record The history of life in the gelogic past as indicated by the traces or remains of living things.
- 8. A charge in the nucleotide base sequence of a gene or DNA molecule.