In early summer wasps, like bees, pollinate plants and flowers as they feed on nectar. If we were to eradicate all wasps, it would cause more problems than it would solve. So, wasps do serve a purpose, and despite being a problem at certain times of the year, they are a beneficial insect.
It is called Epiglottitis.
Displacement is usually the method that is used to measure the volume of a solid with an irregular shape
The answer is CrossBreeding