Simplify the following text for a Grade 10 native English-speaking person.
Original: Colonies use a decentralised , self-organised systems of activity guided by swarm intelligence to exploit food sources and environments that could not be available to any single insect acting alone .
Simplified: They are a prime example self-organised systems which use swarm intelligence . They use this cooperation to exploit food sources and environments which would not be available to any single insect acting alone .