Across
- 5. Selective breeding of plants and animals to prompt the occurrence of desirable traits in offspring
- 7. Method of determining the age of a fossil by comparing its placement with that of fossils in other layers of rock
- 8. Ability of an organism to survive and reproduce in its environment
- 9. A group of individuals that belong to the same species and live in the same area
- 10. The process by which individuals that are better adapted to their environment can survive and reproduce
- 11. Remains of a once-living organism found in layers of rock, ice, or amber
Down
- 1. Found when a dead organism becomes buried in sediment
- 2. A trait that improves chances of survival and reproduction for a group of individuals in a population
- 3. Any factor, abiotic or biotic, that influences living organisms.
- 4. A group of similar organisms that can mate and reproduce
- 6. When individuals in the same species have slightly different sizes and colors