Across
- 3. What's left after an organism dies.
- 5. section When you cut something and look at it from the cut side.
- 6. --event. A fast drop in biodiversity.
- 7. Large plates of the earth's crust that move slowly.
- 11. The study of the body structures of organisms.
- 12. The study of the earth's structures and history.
- 15. The layer of rock on the bottom is the oldest.
- 16. All of the organisms born and living at about the same time.
- 17. The study of fossils.
Down
- 1. A very long period of time (millions of years).
- 2. An unborn or unhatched organism.
- 4. Generations that came before you.
- 5. Having to do with comparing things to each other.
- 8. Changes that happens very slowly because each generation is a little different from its parents.
- 9. From the ocean.
- 10. Naturally preserved remains of dead organisms.
- 13. Break down into very small pieces. Decompose.
- 14. When tectonic plates crash and one rises up.