Animal genetic resources for food and agriculture crop and livestock species in the early neolithic time period changed our human evolution and lifestyles. This ability to control food production led to major demographic, technological, political and military changes. Consecutively, thousands of years of natural and human selection, genetic drift, inbreeding, and crossbreeding have contributed to the diversification of animal genetic resources and increased the variety of environments and production systems that livestock keeping takes place. Relatively few species have been domesticated; out of the world's 148 non-carnivorous species weighing more than 45 kg, only 15 have been successfully domesticated. The proportion of domesticated birds used for food
Mail pouch a mail pouch is mail sealed against postal inspection. An example of first-class mail is a typed letter or one written by hand. It must weigh less than 13 ounces. Registered mail that would be carried in a mail pouch is mail that is within a certain length and width, regardless of thickness. Registered mail can be insured up to $25,000 for a certain premium fee. There is no limit on the value of an item sent in by registered mail. Registered mail is closely guarded and given maximum security like in handling with a locked mail pouch. Military mail