Relier Pairs Levels of OrganizationVersion en ligne Match the level of organization with its definition par Anna Fox 1 The basic unit of life 2 Multiple organisms of the same species that live in the same area 3 A group of tissues in a living organism that work together to perform a specific function. 4 A group of cells that perform a specific function 5 A single individual or living thing 6 A group of organs that work together to perform specific functions. 7 Multiple atoms bonded together 8 The basic building block of matter 9 A part of a cell that does a specific job.