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 worker bees (Fig. 2) are the largest group of bees in the hive up to 60,000 in midsummer. They develop in the smallest cells in the comb of the colony from fertilized eggs laid by a queen. They are imperfect females and under normal hive conditions they do not lay eggs.