Gold, cotton, iron and rice
Cigarettes, motorcars, cotton clothes, machines and Petroleum
Coal, iron and wool
Meat, wheat, silver and woolen clothes
Cell wall
RNA
Cell membrane
None of these
1 and 3 only
1 only
2 and 3 only
1, 2 and 3
synthetic substitutes
Recurring cost
Lack of competition
Baggase
Bandipur
Corbett
Velavadar
Periyar