Across
- 3. – Extracted from shellfish, used in medicine (8)
- 5. – Gas from manure used as renewable energy (6)
- 8. – Fertilizer made from animal bones (8)
- 9. – Milk protein used in adhesives and plastics (6)
- 10. – Hormone from adrenal glands, first isolated from animals (9)
- 12. – Enzyme from calves’ stomachs, used in cheese-making (6)
- 13. – Oil from cattle feet, used to soften leather (9)
- 14. – Anticoagulant drug derived from pig intestines (7)
Down
- 1. – Byproduct of fat processing, used in lotions & explosives (8)
- 2. – Fat rendered from cattle, once used in soap & candles (6)
- 4. – Pig pancreas was the first source of this hormone (7)
- 6. – A waxy byproduct of sheep’s wool, used in cosmetics (7)
- 7. – Found in feathers and hooves, used in shampoos (7)
- 9. – Protein extracted from hides, used to make gelatin (8)
- 11. – Stomach enzyme from pigs, used in digestive aids (6)