If individuals cannot change or adapt, how does a population change or adapt over time (hint: think reproduction)?

“Populations evolve through a process known as natural selection which allows individuals with beneficial traits for survival to breed with other individuals who share those traits, eventually leading to offspring who only exhibit those superior traits.” -from: https://www.thoughtco.com/only-populations-can-evolve-1224608
Hope this helps! :)

The answer would be sand and gravel