<span>Scientists choose where are units of time began and ended based on major changes in life forms at certain times</span>
The question that Bill Clinton calls the urgent question of our time is weather or not we can make change a friend to us instead of it being an enemy. Basically ,he is saying we need to be flexible and ready to change because he believed that change was good for the country.
Hope This Helps Human <3
Roaraion on it axis and revolution around the sun
