An allele is a variation of a gene the assumption here that by particular character you also mean gene
Answer:
the element oxygen , represented by the symbol o, is classified as a pure substance
You forgot to add the answers but a non living factor that could contribute could be something like temperature.
Its used to protect genetic diversity and help reintroduce into the wild.
C. alive. The vaccine contains a live strain of varicella-zoster (chicken pox) virus which has been attenuated so that it will stimulates the immune system but does not cause any disease in healthy people.
