Water that you consume is absorbed in the upper small intestine through osmosis. It enters the bloodstream and is transported all over the body. This is why animals have circulatory systems -- otherwise, our cells would absorb water and salt until they swelled. Our circulatory systems move water around our bodies and remove it as needed through sweating and urination.
All the stuff the body doesn't need has to get out of the body somehow. Some of it goes from the blood to the kidneys, which make urine (wee) - which is mostly water. Some stays in your gut and comes out as faeces (poo) - which is also mostly water! Some comes out in the air you breathe (if you breathe onto a really cold mirror you will see little drops of water on the glass - this is water from your breath).
What happens to the water we drink?
Water that you consume is absorbed in the upper small intestine through osmosis. It enters the bloodstream and is transported all over the body. This is why animals have circulatory systems -- otherwise, our cells would absorb water and salt until they swelled. Our circulatory systems move water around our bodies and remove it as needed through sweating and urination.
All the stuff the body doesn't need has to get out of the body somehow. Some of it goes from the blood to the kidneys, which make urine (wee) - which is mostly water. Some stays in your gut and comes out as faeces (poo) - which is also mostly water! Some comes out in the air you breathe (if you breathe onto a really cold mirror you will see little drops of water on the glass - this is water from your breath).
http://science.howstuffworks.com/environmental/earth/geophysics/h2o3.htm
http://www.cyh.com/HealthTopics/HealthTopicDetailsKids.aspx?p=335&np=284&id=1494#1