Across
- 1. the amount of organisms living in one area
- 5. animals that have been kept and tamed
- 8. rounded underground storage in plants
- 9. species born in the same time
- 12. the altering of genes
Down
- 2. animals finding ways to better survive
- 3. a group of animals containing similar genes
- 4. humans selecting animals to breed
- 6. animals moving to warmer climates
- 7. species mating and adapting
- 10. tissue that conducts water upwards
- 11. any difference in a species