Variations are important for the survival of species over time. Justify this statement with reasons.

(N/A) $(i)$ Variations allow organisms to adapt to changing environmental conditions,ensuring their survival.
$(ii)$ Variations provide the raw material for natural selection,where individuals with advantageous traits are more likely to survive and reproduce,passing those traits to the next generation.
$(iii)$ They prevent the extinction of a species by ensuring that at least some individuals can survive if the environment changes drastically.