Across
- 3. - A test to investigate a hypothesis.
- 4. - Genetic material.
- 7. System - The sun and its orbiting planets.
- 8. - An educated guess.
- 10. - A substance composed of one type of atom.
Down
- 1. - The study of celestial objects.
- 2. - The study of heredity.
- 5. - An instrument for magnifying tiny objects.
- 6. - Microscopic organisms.
- 9. - A community of living organisms.