Mollusks
Mollusks is the group of invertebrates that made up the majority of the Marine species. Their bodies tend to not divided into segments like other organisms.
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
Answer:
"U"-shaped, with peaks at the low and high extremes of beak size; disruptive selection
Natural system is former when various components get grouped together for a particular function
