I could answer this but you don't have any examples here lol
Morphine:
Name:... Morphine
One reason to educate 7th graders about Morphine is because if excessively taken, then breathing problems can happen and asthma can start. Another reason is because since there is a high chance of you continuously using it, sedation and even comas could happen.
(I feel like I did this wrong lol)
The answer is Chemotherapy
Instead of using animals in medical expereince, i think<< that scientests could test it on bacteria or humans, if it is safe enough.