Can someone help with at least one please?

Amistake occurs during mitosis of a muscle stem cell.how might this affect muscle tissue

The large ground finch obtains food by cracking seeds. what is its short, strong beak an example? a) tendency toward perfection b) adaptation of a species over time c) selective use and disuse of an organ over time d) scarcity of recourses

Which flexible structure that supports the nerve cord and led to the backbone