A really good one that your school would love is the health risks of smoking tobacco.
Its a really simple topic, easy to research and develop, and theres a lot of risks so you have a lot of options.
Hope this helped. Good luck on your speech!
Well I'm not a big science wiz but most likely its the liver because the when you eat food it goes through all the other parts in the body and at some point it gets to the liver and the liver absorbs nutrients and vitamin (like vitamin C or etcetera) so I'm not sure if this is right or not but that's exactly what the liver does so I would have to say the answer is liver
I believe that the answer is D, I hope it helps!
