Across
- 3. record A collection of fossils over time that shows changes in organisms.
- 6. Observing similar structures in organisms and comparing them to each other.
Down
- 1. Preserved organisms from many years ago showing a record of past life.
- 2. A system in organisms made up of bones; organisms can have an exoskeleton (outside the organism) or an endoskeleton (inside the organism).
- 4. Any living thing.
- 5. An unborn or unhatched baby.