Explanation:
no link. sorry I can't help
The answer is C. Eukaryotes
They saw how smoking effected the body since smoking was pushed as something good for a long time, a lot of people started smoking and after a few years doctors finally saw a difference between a smokers body and a non smokers body
First blank: The mobility of their hosts same goes for the second one :)
A)Movement
Tress or plants can't move they can grow, reproduce and evolve but not move.