Across
- 3. site – a place where scientific study is conducted
- 7. – parts of rock that stick out over a space
- 11. – small particles of sand, clay, or rock
- 12. – a line of descent or evolutionary history
- 13. – small round windows on ships or submarines
- 16. – the natural home of an animal or plant
- 17. – catching too many fish, reducing their population
- 19. – large quantity or number
- 20. – official limits or controls
- 21. range – a small geographical area where a species lives
Down
- 1. – no longer existing
- 2. – standing straight up and down
- 4. not conducive to – conditions that do not allow something to happen
- 5. – a group of the same species living in one area
- 6. record – information about past life preserved in fossils
- 8. – a vehicle that travels underwater
- 9. reefs – underwater ecosystems made of coral
- 10. – the process of particles settling to form layers
- 14. activity – eruptions or movement of magma
- 15. – individual animals or plants studied by scientists
- 18. – happening later or after something else