Across
- 3. A star that has exploded
- 5. A substance that has mass and occupies space
- 6. Bone that protects the brain
- 8. The rock formed from cooled magma
- 9. Undigested part of the plant food
Down
- 1. State of matter where the particles arranged in fixed positions
- 2. The body's ability to fight off diseases and infections
- 3. Term for a baby plant
- 4. layers of gases around the earth
- 7. The substance that dissolves in a solution