It simply is just getting help
Russ is a doctor who specializes in treating childrens illnesses and injuries his job title is best described as a pediatrician.
Answer:
They can teach you the lessons they learned to you. The times they went through, the hard times can be avoided by learning from them.
Explanation:
Control: all roaches in the other group
Independent: dioxin
Dependent: whether they live or die
Data: the 45/100 dead