1 The primary cause of COPD is tobacco smoke (through tobacco use or second-hand smoke).  The disease now affects men and women almost equally, due in part to increased tobacco use among women in high-income countries.
Swarming is the process by which a new honey bee colony is formed when the queen bee leaves the colony with a large group of worker bees. In the prime swarm, about 60% of the worker bees leave the original hive location with the old queen. This swarm can contain thousands to tens of thousands of bees.
The Africanized honey bee was first introduced to Brazil in the 1950s, in an effort to increase honey production; but, in 1957, 26 swarms accidentally escaped quarantine. Since then, the species has spread throughout South America, and arrived in North America in 1985. Hives were found in south Texas of the United States in 1990.