Urbanization has changed literally everything over the years from the environment being destroyed little by little but also it effects water pollution and by factories being made puts a bunch of terrible greenhouse gasses that are not healthy to breath in.
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It should be natural selection since there is no external influence implied. (like environment or genetic mutations.)
5. to B. 3. to E. 2 to A. 1. to D. 4. i believe is C.
