The Kazarites were a humanoid civilization native to planet Kazar. While technologically advanced, the Kazarites were noted ecologists, and largely lived in agricultural societies well into the 23rd century.
According to Kevin Riley, speaking from experience, one should "never" want to seat a Therbian next to a Kazarite at a state dinner, not unless one wanted the Therbian hacking and coughing before the entrée is even served. (TOS novel: Foul Deeds Will Rise)
Kazarites were recruited to help revive the ecology of the planet Mestiko following the destruction caused by "the Pulse". The Kazarites also allowed the Mestikan Zamestaad and other Payav refugees to settle in the Jarol Desert on Kazar following the mar-Atyya revolution in 2274. (TOS - Mere Anarchy eBook: The Darkness Drops Again)
A group of Kazarites, along with members of other races, were stranded on Pacifica during the Borg Invasion of 2381, but were able to return home when the crisis was over. (TNG novel: Losing the Peace)