Question

Production of food from animal sources has increases in few decades.justify this statement.

Answer 1

1.Improved varieties and cross-breeds have been developed by gentic engineering. These are called as Cross Breeds.
2.Also Animal husbandry has become more scientific and appropriate.
3.Proper health and disease control has also improved the yield.
4.The quality of fodder provided has also remarkably  improved thus yeilding better results.