Across
- 3. made by chemical process
- 5. a chemical process which occur in living beings
- 6. a substance to stop oxidation
- 7. a worm, part of the large phylum
- 9. single cell organism
Down
- 1. a substance in plants, beneficial for humans
- 2. a yellow pigment, a food supplement
- 4. preparation of land for farming
- 8. a favorable outcome