Across
- 3. over Fertilization
- 4. The death of a whole species
- 8. A situation when the orignal population curve is restored
- 9. similar uses
- 11. Darwin's theory of evolution
- 13. overgrowning of algae due to eutrification
- 14. remains of an animal
Down
- 1. the assortment of species
- 2. rock that is sedimentary
- 5. The original big continent
- 6. organs that are not needed
- 7. the chance of reproduction in a particular species
- 10. smiliar stucture
- 12. a type of selection that is not natural