Answer:
cell is the structural and functional unit of live.
Atom are the smallest particle of chemical element
The second type of body fluid, the extracellular fluid, have two types: the interstitial fluid and the intravascular fluid. The interstitial fluid serves as a messenger for transferring materials to and from cells. While the intravascular fluid is responsible for being within the circulatory systems of the body, being am addition of 4% of the body's weight.
The answer is DRINKING FLUIDS,and SLEEP
Most likely a savanna because there is a lot of space to roam around and plenty of grass to eat.
