This question dose not have enough info to answer, i'll gladly help if this question had a date in which mercury was used or what had mercury in it.
I apologize.
D. It must go from areas of low concentration to high, and this is only achievable with the use of energy, ATP!
Respiratory- You breath faster to help supply the muscles with more oxygen.
Integumentary (skin) - Sweat helps cool down the body.
It’s water I don’t know but it’s only that
