nip your self with some tweezers or cut your self and get a straw in your blood and suck it till the a straws full and spit the blood in a bowl
Drink plenty Of water
The body does not store water-soluble vitamins from the foods we eat
Your body can store a fat soluble vitamin but not a water soluble vitamin because they are not easily excreted out of the body as water soluble vitamins are.
Yes
Purifyed what like water bottles and water that you can buy a the store.
altitude
A cactus stores most of its water in its stem or body
The body will store Vitamin D first because it's a fat-soluble vitamin which means it can be dissolved in fat. Once it's dissolved in fat, it can be stored in the body. Vitamin C is a water-soluble vitamin which means it needs to be dissolved in water before the body can/will store it.
No - it often means you're actually not drinking enough (which puts your body in an emergency "store water" mode).
The Vacuole
yes
Intracellular compartment stores most of water. It is 40 % of body weight. As against extracellular compartment. where is is 20 %.
I'm assuming that your question is about why people can abstain from food but not water for an extended period of time. The reason for this is that your body is about 70% water and you need water to operate even on the cellular level. Your body also needs energy, which you get from food. However, your body can store energy and run off of stored energy (usually fats) for a very long time, but the human body does not store excess water for long peiods of time.