Across
- 2. Holes from which sea animals breathe
- 3. Separating grains from stalks
- 9. Painting by Gustav Courbet
- 10. Changes in the surroundings that makes respond
- 11. Body shape of the fish
- 12. Habitat of living organisms
- 13. Place where magnet were first discovered
Down
- 1. Rotting of materials into manure
- 4. Emperor of China
- 5. Method of making compost by redworms
- 6. Ancient Greek philosopher
- 7. Getting rid of wastes by organisms
- 8. Changes the direction of the body