Across
- 1. A group of the same species living in the same area at the same time.
- 4. When a mountain, river, or ocean divides a population so that groups of the same species cannot meet or breed together.
- 7. The variety of different species and living things found in an environment or on Earth.
- 8. The preserved remains of a plant or animal from long ago that helps scientists learn about life in the past.
- 9. When a species dies out completely and no members of that species exist anymore.
- 10. A characteristic or feature of a living thing, such as eye color, beak shape, or size.
Down
- 2. The process where animals with traits that help them survive in their environment are more likely to have babies and pass those helpful traits to their offspring.
- 3. The process by which one species slowly becomes two different species over a very long time.
- 5. A group of living things that can breed together and have babies that can also breed.
- 6. The process of change in living things over long periods of time, where species develop new traits and adapt to their environments.
