Geological Time

2. Prevented from decaying or spoiling and prepared for future use
4. Any of various dark heavy viscid substances obtained as a residue
6. The earth science that studies fossil organisms and related remains
9. fossils Preserved remains of things such as imprint of the body (such as footprints), fossilised during and burrows
10. Partially carbonized vegetable matter saturated with water; can be used as a fuel when dried

1. Matter that has been deposited by some natural process
2. Ground that is permanently frozen
3. Time period on the geological time scale when complex life forms were developing
5. An imprint of the outside of the body in rock
6. When wood is replaced by minerals and fossilised
7. fossils When a part of the organism such as skeleton is preserved and remains in its original form
8. The preserved evidence in rocks or soils of organisms that were once alive