___________is a life process that vital for the proliferation of species but not for individual's survival.
Reproduction is one of the characteristics of living organisms, which ensures the continuity of the species. Reproduction, in itself, is not vital for individuals survival as see animals such as mule are infertile. Some human individuals may also be infertile and thus cannot reproduce but still can live their lives.
Life processes such as nutrition and respiration are important for an individual to survive. Locomotion may or may not be important for survival, as we see some animals such as sponges are sessile too. These help an organism on an individual level but are not vital for the continuation of species.