Lack of order or predictability with gradual decline into disorder. Second law says that entropy is the natural tendency of any isolated system to degenerate into a more disordered state. This happens to any system over time. Like a car that breaks down over time. One could argue that life on Earth is not a isolated system, which is why we don't have a decline or disorder. That also depends if the Sun Earth system breaks down but life leaves for another solar system. Or, maybe the solar system isn't an isolated system and receives energy from the entire environment like stated in the Electric Universe theory. Which is the idea that the Sun and all bodies in the universe are like giant electrical grounds that absorb surrounding electrical energy. The Sun isn't a giant nuclear furnace, but a giant electrical ball.
Whatever the case is, life maybe where you find energy. Systems just automatically establish themselves once energy is there.