Across
- 2. system, The collection of 8 planets and a moon in an orbit.
- 5. A fixed luminous point in the night sky.
- 8. The activity or condition of competing.
- 9. An individual animal, plant, or single-celled life form.
- 10. A group of stars forming a recognizable pattern.
- 11. An object or practice that has continued to exist from an earlier time.
Down
- 1. A community of interacting organisms and their physical environment.
- 3. A small rocky body orbiting the sun.
- 4. A celestial body moving in an elliptical orbit around a star.
- 6. A group of people living in the same place.
- 7. web, A system of interlocking and interdependent food chains.