Characteristics of Life
Living things keep stable conditions inside the body.
Some plants have to deal with periods of little rainfall. To survive, the plant has to keep the right amount of water in its cells. Even their structures help make sure this happens.
Humans are animals. Our internal body parts require JUST the right temperature... 98.6 degrees F. Too hot or too cold and that could mean doom, Doom, DOom, DOOm, DOOM!!!!!!