Answer: B: Mutation increase variety in a population.
Explanation:Mutations are changes to an organism's DNA and are an important driver of diversity in populations. Species evolve because of the accumulation of mutations that occur over time. This mutation has introduce a new allele into the population that increases genetic variation and may be passed on to the next generation.
Answer: different species
Explanation: They live in the same community like a Gouldian finch and a Double-Barred finch but are different species
Cells.........they are the basic structural and functional unit of life
Galaxy -astroids and comets . Solar system- dwarf planets