Answer:
1. Animal without a backbone - Invertebrate
2. Animal with backbone - Vertebrate
3. Youngest on top - Graded bed
4. Simultaneous disposition - Superposition
5. Comparing Rock Columns - Correlation
6. Missing rock - Unconformity
7. Rock from particles - Clastic
8. Crystal growth - Crystallisation
Step-by-step explanation:
The vertebral column is general referred to as the backbone. Animals with backbones are therefore referred to as vertebrates while those that lack backbones are referred to as invertebrates.
A graded bed is a bed characterized by variable grain size from one bed size to the other with the size decreasing from the top to the bottom.
Superposition is the multiple or simultaneous state of occurrence of a system.
Correlation in geology has to do with the comparison of rock layers to ascertain that they are of the same age.
Uncomformity has to do with the presence of gaps or missing information in the geologic record of rocks.
Clastics are rocks that are made up of smaller pieces of older rocks
Crystallization has to do with the formation of solid crystals from solutions or precipitates.