Answer:
Forms of passage of substances across the blood–brain barrier. (A) Passive diffusion: fat-soluble substances dissolve in the cell membrane and cross the barrier (e.g., alcohol, nicotine and caffeine). Water-soluble substances such as penicillin have difficulty in getting through.
An apple is correct answer
Answer:
Yes you could srain your body
Explanation:
Over exercise could effect your body in a bad way because you could strain a muscle.