The Goldilocks Principle
Just look at the earth. The temperature, the water, and the vast lands, and how they are all interdependent on each other. The earth’s finely tuned characteristics, as complex as it is, make the planet habitable for creation. The Goldilocks principle is the observation that something must fall into certain narrow ranges instead of extremes. The earth's distance from the sun, its size, atmosphere, magnetic field, 24-hour rotation, and the axial tilt that gives us the four seasons are perfect. This is just a small sample list, but there are dozens of parameters that need to happen for the earth to be just right for us.