a swarm
A blessing.
Breakout groups are called sects.
A group of Penguins is called a "waddle" A group of Penguins is called a "waddle"
They're referred to as a pod. a pod of whales
A group of caribou is called a herd. Reindeer are also grouped in herds.
The proper term for a group of stars is "asterism". They can also be known as a "cluster" and/or a "constellation".
MOB
Meat
In 5A
A scientist who studies insects is called an "entomologist".
That would be called biological control of insects.
A group of chickens is called a flock however if the flock consists of only hens it is called a brood and if i is made up of only young chickens it is known as a Clutch.