If a rock has 500 atoms of a parent and 3500 atoms of daughter product, how many half lives have passed?

1 half life

2 half lives

3 half lives

4 half lives

there is no way to tell

Islam and the arabic language spread throughout north africa in the 600s primarily through a. african traders b. american colonists c. european explorers d. middle eastern armies select the best answer from the choices provided