They get more supply's for the nest.
Hornets and Yellow Jackets get this large.
Most bees are not aggressive. Hornets and wasps are aggressive. If you have hornets, avoid that area or spray them.
Ground hornets do not have many predators. Bears and other large carnivores are the most likely since they may not be deterred by a few stings.
You should call pest control or ask a professional.
what large hollow muscular organ that can expand like a balloon
Giant hornets - no. However, Nevada and most of the southern states have a very large wasp called the tarantula hawk that delivers one of the most painful stings of any insect.
yes
carbon ,mercury
large firm means when a business has expand in order to benefit from economies of scale
A yellow jacket is a wasp and is always yellow and black. A hornet is a large wasp and is always yellow and brown. The Bald faced Hornet found in the USA is actually a wasp and is black and white.
One of the components of the hornet venom is a pheromone, called the alarm pheromone. This attracts other hornets to attack. When you squash a hornet you release all of the venom it has stored and the pheromone attracts the others.
spleen