Across
- 2. The process by which living things change over time.
- 5. acids The building blocks that make up proteins
- 9. A trait that can be passed on from one generation to the next through genes.
- 10. More of these are produced than the environment can support.
- 11. structures Body parts that different animals share.
- 12. An animal or plant in its earliest stages of development.
- 14. A trait that makes individuals in a population better able to survive.
- 15. Inherited traits are passed on through these.
- 16. The building blocks of an organism's body.
Down
- 1. record Like a history book of life on Earth that shows how species changed.
- 3. The process by which random evolutionary changes are selected for by nature in a consistent way.
- 4. Preserved remains or traces of ancient life.
- 6. dating A method used to determine the age of fossils or surrounding rocks.
- 7. The blueprint or instruction manual found in every living thing.
- 8. structures Body parts that look different but have the same basic structure, suggesting a common ancestor.
- 13. The concept that individuals in a population differ from each other due to random genetic differences.