- If it's a pill or something, someones body could react badly to it
- Age definitely effects it
Your circulatory and respiratory systems
I am not 100% sure but i have an idea for the first box, In the circulatory system, blood is pumped into veins that carry the blood to tissues in your body. I really hope this helped you and was correct.
They can use scientific journals, presentations during meetings, or just directly towards the public.
