Across
- 4. A physical or behavioral characteristic of an organism.
- 7. A scientist who studies fossils to learn about ancient organisms.
- 8. A remnant or trace of an organism of a past geologic age, such as a skeleton or leaf imprint, embedded, and preserved in the Earth's crust, usually in stratified rock.
- 9. In sexually reproducing organisms, species consist of individuals that can interbreed with each other.
- 10. Deoxyribonucleic acid.
Down
- 1. A tentative explanation for an observation, phenomenon, or scientific problem that can be tested by further investigation.
- 2. The adjustment or changes in behavior, physiology, and structure of an organism to become more suited to an environment
- 3. A group of organisms of the same species that are in close enough proximity to allow them to interbreed.
- 5. A double stranded DNA molecule that contains a series of specific genes along its length.
- 6. changes in the heritable traits of a population of organisms as successive generations replace one another.