Final answer:
Evolution leads to both biodiversity and commonalities among life. Biodiversity is the result of speciation and extinction over millions of years, while commonalities among life can be traced back to shared traits inherited from a common ancestor.
Step-by-step explanation:
Evolution, through processes such as natural selection and mutation, leads to both biodiversity and commonalities among life. Biodiversity is the result of millions of years of speciation and extinction, which has led to the diverse array of species that we see today.
On the other hand, commonalities among life can be traced back to shared genetic, biochemical, and morphological traits that have been inherited from a common ancestor. These shared characteristics and traits provide evidence of the unity of life and the evolutionary relationships between different species.