Answer the following question given this paragraph: 

Some single-celled organisms such as bacteria can group together and form a colony. A colony refers to a group of individual organisms of the same species that live closely together. This is usually done to benefit the group, such as by providing a stronger defense or the ability to attack bigger prey. A colony can also form from organisms other than bacteria. A bacterial colony often defends from a single organism, producing a colony of genetically identical individuals.


Q: What refers to a group of individual organisms of the same species that live closely together?


A:
a colony