Across
- 7. a group of living organisms
- 8. made or produced by human beings rather than occurring naturally
- 9. the process of a group of species becoming extinct
- 10. a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.
Down
- 1. all genes in a breeding population
- 2. a form of evolution in which inter-dependent living things affect one another's adaptations
- 3. a process that makes living things better suited to their way of life
- 4. the natural home of a organism
- 5. under a branch of inventing new gadgets for mankind
- 6. bones of old organisms