What is happening why are elephants being born with small/no tusks? Why is that increasing ?

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

One of the reasons that stars are so large is because