5facts about how water is used in the body

You need water to digest your food and get rid of waste. Water is also in lymph, a fluid that is part of your immune system, which helps you fight off illness. Your blood, which contains a lot of water, carries oxygen to all the cells of your body.

answer; /// i believe that the correct answer is (d); /// alternate walking and running;

this one is confusing

explanation:

idk