2-1ABBBAB 1.safer 2. tighter controls 3. Vegetables 4. extinct 5. decreasing in numbers 6. poor countries 7. whole ecosystem2-2 1. organic 2. less than 3. at least 4.95% 5.100% 6. the outdoors 7. natural diet 8. being kept in small cages 9. being raised2-3 1.ACE 2.AC 3.AE 4.A 1. milk, cheese, yoghurt / yogurt / milk, cheese, and yoghurt / yogurt2. marine algae 3. fish oil supplements 4. eat meat2-4 1. their natural state 2. man-made ingredients 3.